Inverse properties

[iosonopersia]

As suggested by @GabrielePisciotta:

It might be interesting to have an inverse property in OCDM (or at least in the oc_ocdm library) to get all the entities that have a certain specified identifier object, starting from the latter (similarly to what we already have for ARs with get_is_held_by ()) . The use case is precisely that of going backwards, perhaps even starting from the literal value, going to take all the identifier objects that have the literal (eg: string doi) and subsequently all the entities connected to this identifier (ex: a journal article).
Right now you can get the information of interest with a simple SPARQL query, but with oc_ocdm we can't do SPARQL queries and doing the reverse is a bit convoluted, something like ar.get_is_held_by ()