| PREFIX : <http://example/> | |
| PREFIX n: <http://example/x#> | |
| PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> | |
| PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> | |
| PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> | |
| SELECT * | |
| { | |
| ?x rdf:type/rdfs:subClassOf* :B . | |
| OPTIONAL { ?x rdf:type/rdfs:subClassOf* ?t } | |
| } |