About: http://webisa.webdatacommons.org/221218469

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	I am fairly certain that the taxonomies have nothing truly in common except posts that they share, so I think you can not avoid running an actual query of posts, in order to learn which categories are candidates for your criteria.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com