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rdf seems to be silent about invalid JSON #14

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dhhepting opened this issue Apr 4, 2023 · 2 comments
Open

rdf seems to be silent about invalid JSON #14

dhhepting opened this issue Apr 4, 2023 · 2 comments

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@dhhepting
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I am using rdf from the command line as recommended:

rdf serialize --input-format tabular --output-format ttl file.csv

where file.csv is accompanied by file.csv-metadata.json

I have been trying to reproduce the output of some examples and then create my own, but the output I got from my own attempt didn't match. After much head-scratching, I realized that my JSON wasn't valid -- I had put an extra comma before a closing brace. Once I corrected the metadata JSON, the expected output was generated.

Is there a way to detect that issue when creating RDF from the CSV?
@gkellogg
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gkellogg commented Apr 4, 2023

It should through a ::JSON::ParserError if there's a problem parsing the metadata file, as that is native behavior of the JSON gem. You might try adding "--validate" and/or "--debug" to the CLI arguments to see if it tells you any more. Otherwise, if you can give me something to reproduce the error, I can look into it further.

@dhhepting
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Thanks for your reply. I have made file.csv:

id,response,v1,t1
tst,001,vocab:FAlways,"some text"
tst,002,vocab:FOften,"more text"

and file.csv-metadata.json:

{
  "@context": ["http://www.w3.org/ns/csvw", { "@language": "en" }],
  "url": "file.csv",
  "tableSchema": {
    "columns": [{
      "name": "id",
      "datatype": "string",
      "required": true,
      "suppressOutput": true
    }, {
      "name": "response",
      "datatype": "int",
      "required": true,
      "suppressOutput": true
    }, {
      "name": "v1",
      "datatype": "QName",
      "dct:description": "Variable 1",
      "propertyUrl": "http://example.com#var1"
    }, {
      "name": "t1",
      "datatype": "string",
      "dct:description": "Text 1",
      "propertyUrl": "http://example.com#txt1"
    }, {
      "name": "type_row",
      "virtual": true,
      "propertyUrl": "rdf:type",
      "valueUrl": "schema:Thing"
    }],
    "primaryKey": ["id", "response"],
    "aboutUrl": "http://www.example.com/file#resp-{id}-{response}"
  }
}

Running this command rdf serialize --input-format tabular --output-format ttl file.csv gives the following output:

@prefix csvw: <http://www.w3.org/ns/csvw#> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix schema: <http://schema.org/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<http://www.example.com/file#resp-tst-001> a schema:Thing;
  <http://example.com#txt1> "some text";
  <http://example.com#var1> "vocab:FAlways"^^xsd:QName .

<http://www.example.com/file#resp-tst-002> a schema:Thing;
  <http://example.com#txt1> "more text";
  <http://example.com#var1> "vocab:FOften"^^xsd:QName .

 [
    a csvw:TableGroup;
    csvw:table [
      a csvw:Table;
      csvw:row [
        a csvw:Row;
        csvw:describes <http://www.example.com/file#resp-tst-001>;
        csvw:rownum 1;
        csvw:url <file:/Users/hepting/Downloads/file.csv#row=2>
      ], [
        a csvw:Row;
        csvw:describes <http://www.example.com/file#resp-tst-002>;
        csvw:rownum 2;
        csvw:url <file:/Users/hepting/Downloads/file.csv#row=3>
      ];
      csvw:url <file:/Users/hepting/Downloads/file.csv>
    ];
    prov:wasGeneratedBy [
      a prov:Activity;
      prov:endedAtTime "2023-04-05T16:23:01.237-06:00"^^xsd:dateTime;
      prov:qualifiedUsage [
        a prov:Usage;
        prov:entity <file:/Users/hepting/Downloads/file.csv>;
        prov:hadRole csvw:csvEncodedTabularData
      ], [
        a prov:Usage;
        prov:entity <file:/Users/hepting/Downloads/file.csv-metadata.json>;
        prov:hadRole csvw:tabularMetadata
      ];
      prov:startedAtTime "2023-04-05T16:23:01.204-06:00"^^xsd:dateTime;
      prov:wasAssociatedWith <https://rubygems.org/gems/rdf-tabular>
    ]
  ] .

which is what I expected to receive. If I modify the file.csv-metadata.json file as follows (removing a comma in the v1 column description and adding a comma in the t1 column description):

{
  "@context": ["http://www.w3.org/ns/csvw", { "@language": "en" }],
  "url": "file.csv",
  "tableSchema": {
    "columns": [{
      "name": "id",
      "datatype": "string",
      "required": true,
      "suppressOutput": true
    }, {
      "name": "response",
      "datatype": "int",
      "required": true,
      "suppressOutput": true
    }, {
      "name": "v1",
      "datatype": "QName",
      "dct:description": "Variable 1"
      "propertyUrl": "http://example.com#var1"
    }, {
      "name": "t1",
      "datatype": "string",
      "dct:description": "Text 1",
      "propertyUrl": "http://example.com#txt1",
    }, {
      "name": "type_row",
      "virtual": true,
      "propertyUrl": "rdf:type",
      "valueUrl": "schema:Thing"
    }],
    "primaryKey": ["id", "response"],
    "aboutUrl": "http://www.example.com/file#resp-{id}-{response}"
  }
}

I get the following output from the serialize command:

@prefix csvw: <http://www.w3.org/ns/csvw#> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

 [
    a csvw:TableGroup;
    csvw:table [
      a csvw:Table;
      csvw:row [
        a csvw:Row;
        csvw:describes [
          <file:/Users/hepting/Downloads/file.csv#id> "tst";
          <file:/Users/hepting/Downloads/file.csv#response> "001";
          <file:/Users/hepting/Downloads/file.csv#t1> "some text";
          <file:/Users/hepting/Downloads/file.csv#v1> "vocab:FAlways"
        ];
        csvw:rownum 1;
        csvw:url <file:/Users/hepting/Downloads/file.csv#row=2>
      ], [
        a csvw:Row;
        csvw:describes [
          <file:/Users/hepting/Downloads/file.csv#id> "tst";
          <file:/Users/hepting/Downloads/file.csv#response> "002";
          <file:/Users/hepting/Downloads/file.csv#t1> "more text";
          <file:/Users/hepting/Downloads/file.csv#v1> "vocab:FOften"
        ];
        csvw:rownum 2;
        csvw:url <file:/Users/hepting/Downloads/file.csv#row=3>
      ];
      csvw:url <file:/Users/hepting/Downloads/file.csv>
    ];
    prov:wasGeneratedBy [
      a prov:Activity;
      prov:endedAtTime "2023-04-05T16:16:34.877-06:00"^^xsd:dateTime;
      prov:qualifiedUsage [
        a prov:Usage;
        prov:entity <file:/Users/hepting/Downloads/file.csv>;
        prov:hadRole csvw:csvEncodedTabularData
      ];
      prov:startedAtTime "2023-04-05T16:16:34.863-06:00"^^xsd:dateTime;
      prov:wasAssociatedWith <https://rubygems.org/gems/rdf-tabular>
    ]
  ] .

rdf serialize --validate --input-format tabular --output-format ttl file.csv produces the same output and rdf serialize --debug --input-format tabular --output-format ttl file.csv gives this output:

DEBUG Reader#initialize: input: #<RDF::Util::File::RemoteDocument:0x00007f7fb0466590 @base_uri="file.csv", @charset="utf-8", @code=200, @content_type="text/csv", @last_modified=#<DateTime: 2023-04-04T13:13:56-06:00 ((2460039j,69236s,0n),-21600s,2299161j)>, @headers={:content_type=>"text/csv", :last_modified=>"2023-04-04T13:13:56-06:00"}, @parameters={}, @etag=nil>, base: file:/Users/hepting/Downloads/file.csv
DEBUG  for_input: templates: ["{+url}-metadata.json", "csv-metadata.json"]
DEBUG  for_input: locs: ["file:/Users/hepting/Downloads/file.csv-metadata.json", "file:/Users/hepting/Downloads/csv-metadata.json"]
DEBUG  for_input: failed to load found metadata file:/Users/hepting/Downloads/file.csv-metadata.json: Expected input to be a JSON Object
DEBUG  for_input: failed to load found metadata file:/Users/hepting/Downloads/csv-metadata.json: No such file or directory @ rb_sysopen - /Users/hepting/Downloads/csv-metadata.json
DEBUG  Reader#initialize: input: #<RDF::Util::File::RemoteDocument:0x00007f7fb0466590>, metadata: RDF::Tabular::TableGroup{"@type"=>"AnnotatedTableGroup", "tables"=>[{"@type"=>"AnnotatedTable", "url"=>"file:/Users/hepting/Downloads/file.csv"}]}
DEBUG  each_statement: metadata: RDF::Tabular::TableGroup{"@type"=>"AnnotatedTableGroup", "tables"=>[{"@type"=>"AnnotatedTable", "url"=>"file:/Users/hepting/Downloads/file.csv"}]}
DEBUG   0: statement: _:g458620 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/csvw#TableGroup> .
DEBUG   0: statement: _:g458620 <http://www.w3.org/ns/csvw#table> _:g458640 .
DEBUG   Reader#initialize: input: #<RDF::Util::File::RemoteDocument:0x00007f7fb0466590 @base_uri="file.csv", @charset="utf-8", @code=200, @content_type="text/csv", @last_modified=#<DateTime: 2023-04-04T13:13:56-06:00 ((2460039j,69236s,0n),-21600s,2299161j)>, @headers={:content_type=>"text/csv", :last_modified=>"2023-04-04T13:13:56-06:00"}, @parameters={}, @etag=nil, @links=#<LinkHeader:0x00007f7faea1a628 @links=[]>>, base: file:/Users/hepting/Downloads/file.csv
DEBUG    embedded_metadata: notes: nil
DEBUG    embedded_metadata: table: {"@context"=>"http://www.w3.org/ns/csvw", "url"=>#<RDF::URI:0x6ffa4 URI:file:/Users/hepting/Downloads/file.csv>, "@type"=>"Table", "tableSchema"=>{"@type"=>"Schema", "columns"=>[{"titles"=>{"und"=>["id"]}}, {"titles"=>{"und"=>["response"]}}, {"titles"=>{"und"=>["v1"]}}, {"titles"=>{"und"=>["t1"]}}]}}
DEBUG    md#initialize: load embedded metadata: 
DEBUG    md#initialize: filenames: 
DEBUG    md#initialize: RDF::Tabular::Table{"@type"=>"AnnotatedTable", "url"=>"file:/Users/hepting/Downloads/file.csv", "tableSchema"=>{"@type"=>"Schema", "columns"=>[{"@id"=>"file:/Users/hepting/Downloads/file.csv#col=1", "@type"=>"Column", "number"=>1, "sourceNumber"=>1, "virtual"=>false, "name"=>"id", "titles"=>{"und"=>["id"]}}, {"@id"=>"file:/Users/hepting/Downloads/file.csv#col=2", "@type"=>"Column", "number"=>2, "sourceNumber"=>2, "virtual"=>false, "name"=>"response", "titles"=>{"und"=>["response"]}}, {"@id"=>"file:/Users/hepting/Downloads/file.csv#col=3", "@type"=>"Column", "number"=>3, "sourceNumber"=>3, "virtual"=>false, "name"=>"v1", "titles"=>{"und"=>["v1"]}}, {"@id"=>"file:/Users/hepting/Downloads/file.csv#col=4", "@type"=>"Column", "number"=>4, "sourceNumber"=>4, "virtual"=>false, "name"=>"t1", "titles"=>{"und"=>["t1"]}}]}}, parent: false, context: true
DEBUG    Reader#initialize: input: #<RDF::Util::File::RemoteDocument:0x00007f7fb0466590>, metadata: RDF::Tabular::Table{"@type"=>"AnnotatedTable", "url"=>"file:/Users/hepting/Downloads/file.csv", "tableSchema"=>{"@type"=>"Schema", "columns"=>[{"@id"=>"file:/Users/hepting/Downloads/file.csv#col=1", "@type"=>"Column", "number"=>1, "sourceNumber"=>1, "virtual"=>false, "name"=>"id", "titles"=>{"und"=>["id"]}}, {"@id"=>"file:/Users/hepting/Downloads/file.csv#col=2", "@type"=>"Column", "number"=>2, "sourceNumber"=>2, "virtual"=>false, "name"=>"response", "titles"=>{"und"=>["response"]}}, {"@id"=>"file:/Users/hepting/Downloads/file.csv#col=3", "@type"=>"Column", "number"=>3, "sourceNumber"=>3, "virtual"=>false, "name"=>"v1", "titles"=>{"und"=>["v1"]}}, {"@id"=>"file:/Users/hepting/Downloads/file.csv#col=4", "@type"=>"Column", "number"=>4, "sourceNumber"=>4, "virtual"=>false, "name"=>"t1", "titles"=>{"und"=>["t1"]}}]}}
DEBUG    0: statement: _:g458640 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/csvw#Table> .
DEBUG    0: statement: _:g458640 <http://www.w3.org/ns/csvw#url> <file:/Users/hepting/Downloads/file.csv> .
DEBUG    2: statement: _:g458640 <http://www.w3.org/ns/csvw#row> _:g458700 .
DEBUG    2: statement: _:g458700 <http://www.w3.org/ns/csvw#rownum> "1"^^<http://www.w3.org/2001/XMLSchema#integer> .
DEBUG    2: statement: _:g458700 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/csvw#Row> .
DEBUG    2: statement: _:g458700 <http://www.w3.org/ns/csvw#url> <file:/Users/hepting/Downloads/file.csv#row=2> .
DEBUG    2: statement: _:g458700 <http://www.w3.org/ns/csvw#describes> _:g458720 .
DEBUG    2: statement: _:g458720 <file:/Users/hepting/Downloads/file.csv#id> "tst" .
DEBUG    2: statement: _:g458700 <http://www.w3.org/ns/csvw#describes> _:g458720 .
DEBUG    2: statement: _:g458720 <file:/Users/hepting/Downloads/file.csv#response> "001" .
DEBUG    2: statement: _:g458700 <http://www.w3.org/ns/csvw#describes> _:g458720 .
DEBUG    2: statement: _:g458720 <file:/Users/hepting/Downloads/file.csv#v1> "vocab:FAlways" .
DEBUG    2: statement: _:g458700 <http://www.w3.org/ns/csvw#describes> _:g458720 .
DEBUG    2: statement: _:g458720 <file:/Users/hepting/Downloads/file.csv#t1> "some text" .
DEBUG    3: statement: _:g458640 <http://www.w3.org/ns/csvw#row> _:g458740 .
DEBUG    3: statement: _:g458740 <http://www.w3.org/ns/csvw#rownum> "2"^^<http://www.w3.org/2001/XMLSchema#integer> .
DEBUG    3: statement: _:g458740 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/csvw#Row> .
DEBUG    3: statement: _:g458740 <http://www.w3.org/ns/csvw#url> <file:/Users/hepting/Downloads/file.csv#row=3> .
DEBUG    3: statement: _:g458740 <http://www.w3.org/ns/csvw#describes> _:g458760 .
DEBUG    3: statement: _:g458760 <file:/Users/hepting/Downloads/file.csv#id> "tst" .
DEBUG    3: statement: _:g458740 <http://www.w3.org/ns/csvw#describes> _:g458760 .
DEBUG    3: statement: _:g458760 <file:/Users/hepting/Downloads/file.csv#response> "002" .
DEBUG    3: statement: _:g458740 <http://www.w3.org/ns/csvw#describes> _:g458760 .
DEBUG    3: statement: _:g458760 <file:/Users/hepting/Downloads/file.csv#v1> "vocab:FOften" .
DEBUG    3: statement: _:g458740 <http://www.w3.org/ns/csvw#describes> _:g458760 .
DEBUG    3: statement: _:g458760 <file:/Users/hepting/Downloads/file.csv#t1> "more text" .
DEBUG   0: statement: _:g458620 <http://www.w3.org/ns/prov#wasGeneratedBy> _:g458780 .
DEBUG   0: statement: _:g458780 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Activity> .
DEBUG   0: statement: _:g458780 <http://www.w3.org/ns/prov#wasAssociatedWith> <https://rubygems.org/gems/rdf-tabular> .
DEBUG   0: statement: _:g458780 <http://www.w3.org/ns/prov#startedAtTime> "2023-04-05T16:18:58.014-06:00"^^<http://www.w3.org/2001/XMLSchema#dateTime> .
DEBUG   0: statement: _:g458780 <http://www.w3.org/ns/prov#endedAtTime> "2023-04-05T16:18:58.022-06:00"^^<http://www.w3.org/2001/XMLSchema#dateTime> .
DEBUG   0: statement: _:g458780 <http://www.w3.org/ns/prov#qualifiedUsage> _:g458800 .
DEBUG   0: statement: _:g458800 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Usage> .
DEBUG   0: statement: _:g458800 <http://www.w3.org/ns/prov#entity> <file:/Users/hepting/Downloads/file.csv> .
DEBUG   0: statement: _:g458800 <http://www.w3.org/ns/prov#hadRole> <http://www.w3.org/ns/csvw#csvEncodedTabularData> .
INFO Parsed 31 statements with RDF::Tabular::Reader in 0.186719 seconds @ 0.0 statements/second.
DEBUG 
serialize: graph: 31
DEBUG get_pname: add standard prefix "rdf" => http://www.w3.org/1999/02/22-rdf-syntax-ns#
DEBUG get_pname: add standard prefix "csvw" => http://www.w3.org/ns/csvw#
DEBUG get_pname: add prefix "csvw" => http://www.w3.org/ns/csvw#
DEBUG get_pname: add standard prefix "prov" => http://www.w3.org/ns/prov#
DEBUG get_pname: add prefix "csvw" => http://www.w3.org/ns/csvw#
DEBUG get_pname: add prefix "csvw" => http://www.w3.org/ns/csvw#
DEBUG get_pname: add prefix "csvw" => http://www.w3.org/ns/csvw#
DEBUG get_pname: add prefix "csvw" => http://www.w3.org/ns/csvw#
DEBUG get_pname: add standard prefix "xsd" => http://www.w3.org/2001/XMLSchema#
DEBUG get_pname: add prefix "csvw" => http://www.w3.org/ns/csvw#
DEBUG get_pname: add prefix "csvw" => http://www.w3.org/ns/csvw#
DEBUG get_pname: add prefix "xsd" => http://www.w3.org/2001/XMLSchema#
DEBUG get_pname: add prefix "prov" => http://www.w3.org/ns/prov#
DEBUG get_pname: add prefix "prov" => http://www.w3.org/ns/prov#
DEBUG get_pname: add prefix "prov" => http://www.w3.org/ns/prov#
DEBUG get_pname: add prefix "xsd" => http://www.w3.org/2001/XMLSchema#
DEBUG get_pname: add prefix "prov" => http://www.w3.org/ns/prov#
DEBUG get_pname: add prefix "prov" => http://www.w3.org/ns/prov#
DEBUG get_pname: add prefix "prov" => http://www.w3.org/ns/prov#
DEBUG get_pname: add prefix "prov" => http://www.w3.org/ns/prov#
DEBUG get_pname: add prefix "prov" => http://www.w3.org/ns/prov#
DEBUG get_pname: add prefix "csvw" => http://www.w3.org/ns/csvw#
DEBUG start_document: {:rdf=>#<RDF::Vocabulary::Term:0x5a0 ID:http://www.w3.org/1999/02/22-rdf-syntax-ns#>, :csvw=>"http://www.w3.org/ns/csvw#", :prov=>"http://www.w3.org/ns/prov#", :xsd=>"http://www.w3.org/2001/XMLSchema#"}
@prefix csvw: <http://www.w3.org/ns/csvw#> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
DEBUG statement: _:g458620, bnodePL?: true
DEBUG blankNodePropertyList: _:g458620

 [DEBUG  sort_properties: http://www.w3.org/1999/02/22-rdf-syntax-ns#type, http://www.w3.org/ns/csvw#table, http://www.w3.org/ns/prov#wasGeneratedBy
DEBUG  predicateObjectList: ["http://www.w3.org/1999/02/22-rdf-syntax-ns#type", "http://www.w3.org/ns/csvw#table", "http://www.w3.org/ns/prov#wasGeneratedBy"]

    DEBUG  predicate: <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
a DEBUG  objectList: [#<RDF::Vocabulary::Term:0x6f0b8 ID:http://www.w3.org/ns/csvw#TableGroup>]
DEBUG  path: <http://www.w3.org/ns/csvw#TableGroup>, pos: object, ()?: false, []?: false, rc: 1
csvw:TableGroup;
    DEBUG  predicate: <http://www.w3.org/ns/csvw#table>
DEBUG  path: <http://www.w3.org/ns/csvw#table>, pos: predicate, ()?: false, []?: false, rc: 0
csvw:table DEBUG  objectList: [#<RDF::Node:0x6ff90(_:g458640)>]
DEBUG  path: _:g458640, pos: object, ()?: false, []?: true, rc: 1
DEBUG  blankNodePropertyList: _:g458640
[DEBUG   sort_properties: http://www.w3.org/1999/02/22-rdf-syntax-ns#type, http://www.w3.org/ns/csvw#row, http://www.w3.org/ns/csvw#url
DEBUG   predicateObjectList: ["http://www.w3.org/1999/02/22-rdf-syntax-ns#type", "http://www.w3.org/ns/csvw#row", "http://www.w3.org/ns/csvw#url"]

      DEBUG   predicate: <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
a DEBUG   objectList: [#<RDF::Vocabulary::Term:0x6f0a4 ID:http://www.w3.org/ns/csvw#Table>]
DEBUG   path: <http://www.w3.org/ns/csvw#Table>, pos: object, ()?: false, []?: false, rc: 1
csvw:Table;
      DEBUG   predicate: <http://www.w3.org/ns/csvw#row>
DEBUG   path: <http://www.w3.org/ns/csvw#row>, pos: predicate, ()?: false, []?: false, rc: 0
csvw:row DEBUG   objectList: [#<RDF::Node:0x6ffcc(_:g458700)>, #<RDF::Node:0x6fff4(_:g458740)>]
DEBUG   path: _:g458700, pos: object, ()?: false, []?: true, rc: 1
DEBUG   blankNodePropertyList: _:g458700
[DEBUG    sort_properties: http://www.w3.org/1999/02/22-rdf-syntax-ns#type, http://www.w3.org/ns/csvw#describes, http://www.w3.org/ns/csvw#rownum, http://www.w3.org/ns/csvw#url
DEBUG    predicateObjectList: ["http://www.w3.org/1999/02/22-rdf-syntax-ns#type", "http://www.w3.org/ns/csvw#describes", "http://www.w3.org/ns/csvw#rownum", "http://www.w3.org/ns/csvw#url"]

        DEBUG    predicate: <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
a DEBUG    objectList: [#<RDF::Vocabulary::Term:0x6f07c ID:http://www.w3.org/ns/csvw#Row>]
DEBUG    path: <http://www.w3.org/ns/csvw#Row>, pos: object, ()?: false, []?: false, rc: 2
csvw:Row;
        DEBUG    predicate: <http://www.w3.org/ns/csvw#describes>
DEBUG    path: <http://www.w3.org/ns/csvw#describes>, pos: predicate, ()?: false, []?: false, rc: 0
csvw:describes DEBUG    objectList: [#<RDF::Node:0x6ffe0(_:g458720)>]
DEBUG    path: _:g458720, pos: object, ()?: false, []?: true, rc: 1
DEBUG    blankNodePropertyList: _:g458720
[DEBUG     sort_properties: file:/Users/hepting/Downloads/file.csv#id, file:/Users/hepting/Downloads/file.csv#response, file:/Users/hepting/Downloads/file.csv#t1, file:/Users/hepting/Downloads/file.csv#v1
DEBUG     predicateObjectList: ["file:/Users/hepting/Downloads/file.csv#id", "file:/Users/hepting/Downloads/file.csv#response", "file:/Users/hepting/Downloads/file.csv#t1", "file:/Users/hepting/Downloads/file.csv#v1"]

          DEBUG     predicate: <file:/Users/hepting/Downloads/file.csv#id>
DEBUG     path: <file:/Users/hepting/Downloads/file.csv#id>, pos: predicate, ()?: false, []?: false, rc: 0
<file:/Users/hepting/Downloads/file.csv#id> DEBUG     objectList: [#<RDF::Literal:0x70080("tst")>]
DEBUG     path: "tst", pos: object, ()?: false, []?: false, rc: 2
"tst";
          DEBUG     predicate: <file:/Users/hepting/Downloads/file.csv#response>
DEBUG     path: <file:/Users/hepting/Downloads/file.csv#response>, pos: predicate, ()?: false, []?: false, rc: 0
<file:/Users/hepting/Downloads/file.csv#response> DEBUG     objectList: [#<RDF::Literal:0x700a8("001")>]
DEBUG     path: "001", pos: object, ()?: false, []?: false, rc: 1
"001";
          DEBUG     predicate: <file:/Users/hepting/Downloads/file.csv#t1>
DEBUG     path: <file:/Users/hepting/Downloads/file.csv#t1>, pos: predicate, ()?: false, []?: false, rc: 0
<file:/Users/hepting/Downloads/file.csv#t1> DEBUG     objectList: [#<RDF::Literal:0x700d0("some text")>]
DEBUG     path: "some text", pos: object, ()?: false, []?: false, rc: 1
"some text";
          DEBUG     predicate: <file:/Users/hepting/Downloads/file.csv#v1>
DEBUG     path: <file:/Users/hepting/Downloads/file.csv#v1>, pos: predicate, ()?: false, []?: false, rc: 0
<file:/Users/hepting/Downloads/file.csv#v1> DEBUG     objectList: [#<RDF::Literal:0x700f8("vocab:FAlways")>]
DEBUG     path: "vocab:FAlways", pos: object, ()?: false, []?: false, rc: 1
"vocab:FAlways"
        ];
        DEBUG    predicate: <http://www.w3.org/ns/csvw#rownum>
DEBUG    path: <http://www.w3.org/ns/csvw#rownum>, pos: predicate, ()?: false, []?: false, rc: 0
csvw:rownum DEBUG    objectList: [#<RDF::Literal::Integer:0x70044("1"^^<http://www.w3.org/2001/XMLSchema#integer>)>]
DEBUG    path: "1"^^<http://www.w3.org/2001/XMLSchema#integer>, pos: object, ()?: false, []?: false, rc: 1
1;
        DEBUG    predicate: <http://www.w3.org/ns/csvw#url>
DEBUG    path: <http://www.w3.org/ns/csvw#url>, pos: predicate, ()?: false, []?: false, rc: 0
csvw:url DEBUG    objectList: [#<RDF::URI:0x7010c URI:file:/Users/hepting/Downloads/file.csv#row=2>]
DEBUG    path: <file:/Users/hepting/Downloads/file.csv#row=2>, pos: object, ()?: false, []?: false, rc: 1
<file:/Users/hepting/Downloads/file.csv#row=2>
      ], DEBUG   path: _:g458740, pos: object, ()?: false, []?: true, rc: 1
DEBUG   blankNodePropertyList: _:g458740
[DEBUG    sort_properties: http://www.w3.org/1999/02/22-rdf-syntax-ns#type, http://www.w3.org/ns/csvw#describes, http://www.w3.org/ns/csvw#rownum, http://www.w3.org/ns/csvw#url
DEBUG    predicateObjectList: ["http://www.w3.org/1999/02/22-rdf-syntax-ns#type", "http://www.w3.org/ns/csvw#describes", "http://www.w3.org/ns/csvw#rownum", "http://www.w3.org/ns/csvw#url"]

        DEBUG    predicate: <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
a DEBUG    objectList: [#<RDF::Vocabulary::Term:0x6f07c ID:http://www.w3.org/ns/csvw#Row>]
DEBUG    path: <http://www.w3.org/ns/csvw#Row>, pos: object, ()?: false, []?: false, rc: 2
csvw:Row;
        DEBUG    predicate: <http://www.w3.org/ns/csvw#describes>
DEBUG    path: <http://www.w3.org/ns/csvw#describes>, pos: predicate, ()?: false, []?: false, rc: 0
csvw:describes DEBUG    objectList: [#<RDF::Node:0x70008(_:g458760)>]
DEBUG    path: _:g458760, pos: object, ()?: false, []?: true, rc: 1
DEBUG    blankNodePropertyList: _:g458760
[DEBUG     sort_properties: file:/Users/hepting/Downloads/file.csv#id, file:/Users/hepting/Downloads/file.csv#response, file:/Users/hepting/Downloads/file.csv#t1, file:/Users/hepting/Downloads/file.csv#v1
DEBUG     predicateObjectList: ["file:/Users/hepting/Downloads/file.csv#id", "file:/Users/hepting/Downloads/file.csv#response", "file:/Users/hepting/Downloads/file.csv#t1", "file:/Users/hepting/Downloads/file.csv#v1"]

          DEBUG     predicate: <file:/Users/hepting/Downloads/file.csv#id>
DEBUG     path: <file:/Users/hepting/Downloads/file.csv#id>, pos: predicate, ()?: false, []?: false, rc: 0
<file:/Users/hepting/Downloads/file.csv#id> DEBUG     objectList: [#<RDF::Literal:0x70120("tst")>]
DEBUG     path: "tst", pos: object, ()?: false, []?: false, rc: 2
"tst";
          DEBUG     predicate: <file:/Users/hepting/Downloads/file.csv#response>
DEBUG     path: <file:/Users/hepting/Downloads/file.csv#response>, pos: predicate, ()?: false, []?: false, rc: 0
<file:/Users/hepting/Downloads/file.csv#response> DEBUG     objectList: [#<RDF::Literal:0x70134("002")>]
DEBUG     path: "002", pos: object, ()?: false, []?: false, rc: 1
"002";
          DEBUG     predicate: <file:/Users/hepting/Downloads/file.csv#t1>
DEBUG     path: <file:/Users/hepting/Downloads/file.csv#t1>, pos: predicate, ()?: false, []?: false, rc: 0
<file:/Users/hepting/Downloads/file.csv#t1> DEBUG     objectList: [#<RDF::Literal:0x70148("more text")>]
DEBUG     path: "more text", pos: object, ()?: false, []?: false, rc: 1
"more text";
          DEBUG     predicate: <file:/Users/hepting/Downloads/file.csv#v1>
DEBUG     path: <file:/Users/hepting/Downloads/file.csv#v1>, pos: predicate, ()?: false, []?: false, rc: 0
<file:/Users/hepting/Downloads/file.csv#v1> DEBUG     objectList: [#<RDF::Literal:0x7015c("vocab:FOften")>]
DEBUG     path: "vocab:FOften", pos: object, ()?: false, []?: false, rc: 1
"vocab:FOften"
        ];
        DEBUG    predicate: <http://www.w3.org/ns/csvw#rownum>
DEBUG    path: <http://www.w3.org/ns/csvw#rownum>, pos: predicate, ()?: false, []?: false, rc: 0
csvw:rownum DEBUG    objectList: [#<RDF::Literal::Integer:0x70058("2"^^<http://www.w3.org/2001/XMLSchema#integer>)>]
DEBUG    path: "2"^^<http://www.w3.org/2001/XMLSchema#integer>, pos: object, ()?: false, []?: false, rc: 1
2;
        DEBUG    predicate: <http://www.w3.org/ns/csvw#url>
DEBUG    path: <http://www.w3.org/ns/csvw#url>, pos: predicate, ()?: false, []?: false, rc: 0
csvw:url DEBUG    objectList: [#<RDF::URI:0x70170 URI:file:/Users/hepting/Downloads/file.csv#row=3>]
DEBUG    path: <file:/Users/hepting/Downloads/file.csv#row=3>, pos: object, ()?: false, []?: false, rc: 1
<file:/Users/hepting/Downloads/file.csv#row=3>
      ];
      DEBUG   predicate: <http://www.w3.org/ns/csvw#url>
DEBUG   path: <http://www.w3.org/ns/csvw#url>, pos: predicate, ()?: false, []?: false, rc: 0
csvw:url DEBUG   objectList: [#<RDF::URI:0x70184 URI:file:/Users/hepting/Downloads/file.csv>]
DEBUG   path: <file:/Users/hepting/Downloads/file.csv>, pos: object, ()?: false, []?: false, rc: 2
<file:/Users/hepting/Downloads/file.csv>
    ];
    DEBUG  predicate: <http://www.w3.org/ns/prov#wasGeneratedBy>
DEBUG  path: <http://www.w3.org/ns/prov#wasGeneratedBy>, pos: predicate, ()?: false, []?: false, rc: 0
prov:wasGeneratedBy DEBUG  objectList: [#<RDF::Node:0x7001c(_:g458780)>]
DEBUG  path: _:g458780, pos: object, ()?: false, []?: true, rc: 1
DEBUG  blankNodePropertyList: _:g458780
[DEBUG   sort_properties: http://www.w3.org/1999/02/22-rdf-syntax-ns#type, http://www.w3.org/ns/prov#endedAtTime, http://www.w3.org/ns/prov#qualifiedUsage, http://www.w3.org/ns/prov#startedAtTime, http://www.w3.org/ns/prov#wasAssociatedWith
DEBUG   predicateObjectList: ["http://www.w3.org/1999/02/22-rdf-syntax-ns#type", "http://www.w3.org/ns/prov#endedAtTime", "http://www.w3.org/ns/prov#qualifiedUsage", "http://www.w3.org/ns/prov#startedAtTime", "http://www.w3.org/ns/prov#wasAssociatedWith"]

      DEBUG   predicate: <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
a DEBUG   objectList: [#<RDF::Vocabulary::Term:0x45790 ID:http://www.w3.org/ns/prov#Activity>]
DEBUG   path: <http://www.w3.org/ns/prov#Activity>, pos: object, ()?: false, []?: false, rc: 1
prov:Activity;
      DEBUG   predicate: <http://www.w3.org/ns/prov#endedAtTime>
DEBUG   path: <http://www.w3.org/ns/prov#endedAtTime>, pos: predicate, ()?: false, []?: false, rc: 0
prov:endedAtTime DEBUG   objectList: [#<RDF::Literal::DateTime:0x70198("2023-04-05T16:18:58.022-06:00"^^<http://www.w3.org/2001/XMLSchema#dateTime>)>]
DEBUG   path: "2023-04-05T16:18:58.022-06:00"^^<http://www.w3.org/2001/XMLSchema#dateTime>, pos: object, ()?: false, []?: false, rc: 1
"2023-04-05T16:18:58.022-06:00"^^xsd:dateTime;
      DEBUG   predicate: <http://www.w3.org/ns/prov#qualifiedUsage>
DEBUG   path: <http://www.w3.org/ns/prov#qualifiedUsage>, pos: predicate, ()?: false, []?: false, rc: 0
prov:qualifiedUsage DEBUG   objectList: [#<RDF::Node:0x70030(_:g458800)>]
DEBUG   path: _:g458800, pos: object, ()?: false, []?: true, rc: 1
DEBUG   blankNodePropertyList: _:g458800
[DEBUG    sort_properties: http://www.w3.org/1999/02/22-rdf-syntax-ns#type, http://www.w3.org/ns/prov#entity, http://www.w3.org/ns/prov#hadRole
DEBUG    predicateObjectList: ["http://www.w3.org/1999/02/22-rdf-syntax-ns#type", "http://www.w3.org/ns/prov#entity", "http://www.w3.org/ns/prov#hadRole"]

        DEBUG    predicate: <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
a DEBUG    objectList: [#<RDF::Vocabulary::Term:0x45bdc ID:http://www.w3.org/ns/prov#Usage>]
DEBUG    path: <http://www.w3.org/ns/prov#Usage>, pos: object, ()?: false, []?: false, rc: 1
prov:Usage;
        DEBUG    predicate: <http://www.w3.org/ns/prov#entity>
DEBUG    path: <http://www.w3.org/ns/prov#entity>, pos: predicate, ()?: false, []?: false, rc: 0
prov:entity DEBUG    objectList: [#<RDF::URI:0x6ffa4 URI:file:/Users/hepting/Downloads/file.csv>]
DEBUG    path: <file:/Users/hepting/Downloads/file.csv>, pos: object, ()?: false, []?: false, rc: 2
<file:/Users/hepting/Downloads/file.csv>;
        DEBUG    predicate: <http://www.w3.org/ns/prov#hadRole>
DEBUG    path: <http://www.w3.org/ns/prov#hadRole>, pos: predicate, ()?: false, []?: false, rc: 0
prov:hadRole DEBUG    objectList: [#<RDF::Vocabulary::Term:0x6fedc ID:http://www.w3.org/ns/csvw#csvEncodedTabularData>]
DEBUG    path: <http://www.w3.org/ns/csvw#csvEncodedTabularData>, pos: object, ()?: false, []?: false, rc: 1
csvw:csvEncodedTabularData
      ];
      DEBUG   predicate: <http://www.w3.org/ns/prov#startedAtTime>
DEBUG   path: <http://www.w3.org/ns/prov#startedAtTime>, pos: predicate, ()?: false, []?: false, rc: 0
prov:startedAtTime DEBUG   objectList: [#<RDF::Literal::DateTime:0x701ac("2023-04-05T16:18:58.014-06:00"^^<http://www.w3.org/2001/XMLSchema#dateTime>)>]
DEBUG   path: "2023-04-05T16:18:58.014-06:00"^^<http://www.w3.org/2001/XMLSchema#dateTime>, pos: object, ()?: false, []?: false, rc: 1
"2023-04-05T16:18:58.014-06:00"^^xsd:dateTime;
      DEBUG   predicate: <http://www.w3.org/ns/prov#wasAssociatedWith>
DEBUG   path: <http://www.w3.org/ns/prov#wasAssociatedWith>, pos: predicate, ()?: false, []?: false, rc: 0
prov:wasAssociatedWith DEBUG   objectList: [#<RDF::URI:0x701c0 URI:https://rubygems.org/gems/rdf-tabular>]
DEBUG   path: <https://rubygems.org/gems/rdf-tabular>, pos: object, ()?: false, []?: false, rc: 1
<https://rubygems.org/gems/rdf-tabular>
    ]
  ] .

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@gkellogg @dhhepting