Separate API triples from data triples required to find operations

[bergos]

The data triples to find the matching operation should be separated from the API triples. Data triples means all triples required to find the class type or the class type of a property.

Example

The server has to handle a request to /project/1.

The following SPARQL query covers the logic to find the type of the class:

SELECT * WHERE {
    </project/1> a ?type
}

Which would work for:

</project/1> a p:Project;
  rdfs:label: "first project".

And this query covers the logic to find the class type of a property:

SELECT * WHERE {
  ?class a ?type .
  ?class ?property </project/1> .
}

Which would work for:

</projects> a p:ProjectContainer;
  ex:contains </project/1>.

The logic in this issue is given as SPARQL, but in the actual implementation it should be possible to handle this with any object that implements a Store interface.