Read the documentation here
index.html is constructed with PanDoc
pandoc -t html -H template/header -A template/afterbody -B template/beforebody --shift-heading-level-by=-1 index.md > index.html
wn.rdf is generated from the Turtle with Rapper
rapper -i turtle -o rdfxml-abbrev wn-lemon-$VERSION.ttl > wn.rdf
rapper -i turtle -o rdfxml-abbrev wn-simple-$VERSION.ttl > wn-simple.rdf
rapper -i turtle -o rdfxml-abbrev nomlex-$VERSION.ttl > nomlex.rdf