Distinct subjects for predicate cpack:usesSystemFile in graph https://cliopatria.swi-prolog.org/packs/rdf_qa sorted by frequency

ResourceCount
rdf_qa.pl8
qa_cycle_prop.pl2
qa_empty_repo.pl2
qa_no_label.pl2
qa_object_only.pl2
qa_pred_only.pl2
qa_domain_whitelist.pl1
qa_heuristics.pl1
rdf_qa.pl1