Relies on Cat main templates. Goes over all categories and extract DBpedia Resources that are the main subject of that category.
We are using this to infer that a resource is a Topical Concept.
TODO only do that for resources that have no other ontology type, in post-processing
TODO check if templates Cat_exp, Cat_main_section, and Cat_more also apply
Datasets generated by this extractor.
Datasets generated by this extractor. Used for serialization. If a mapping implementation
does not return all datasets it produces, serialization may fail.
The subject URI of the generated triples
A graph holding the extracted data
when extractor needs some finalization
when extractor has a pre-phase