metatype(?Cls, ?MetaCls) is nondet

e.g. metatype(C,biolink:'Disease')

 anc(?Cls, +Rel, ?Parent) is nondet

reflexive ancestor over Rel note that ubergraph does not materialize reflexive

Undocumented predicates

The following predicates are exported, but not or incorrectly documented.

 rdf_ontology(Arg1, Arg2, Arg3)

 rdf_closure(Arg1, Arg2, Arg3)

 rdf_nr(Arg1, Arg2, Arg3)

 rdf_redundant(Arg1, Arg2, Arg3)

 simj(Arg1, Arg2, Arg3)

 simj(Arg1, Arg2, Arg3, Arg4)

 simj_e(Arg1, Arg2, Arg3)

 simj_e(Arg1, Arg2, Arg3, Arg4)

 ancestor_intersection(Arg1, Arg2, Arg3)

 ancestor_intersection(Arg1, Arg2, Arg3, Arg4)

 ancestor_union(Arg1, Arg2, Arg3)

 ancestor_union(Arg1, Arg2, Arg3, Arg4)

 taxon(Arg1)

 never_in_taxon(Arg1, Arg2)

 not_in_taxon_1(Arg1, Arg2, Arg3)

 not_in_taxon_2(Arg1, Arg2, Arg3)

 conservative_not_in_taxon(Arg1, Arg2)

 not_in_taxon(Arg1, Arg2, Arg3)

 taxon_propagating_property(Arg1)