SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/children> <http://dbpedia.org/resource/William_Campbell_Preston_Breckinridge> . ?x <http://dbpedia.org/ontology/parent> ?uri . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Person>}
Who was the parent of person whose child is William C P breckinridge?
SELECT DISTINCT ?k WHERE { ?r property:parent ?k . ?r property:children resource:William_Campbell_Preston_Breckinridge . ?r rdf:type ontology:Person }
United States Senate
[United States Senate] is the parent of the cleric whose child is William Campbell Preston Breckinridge .
[The US Senate] is the parent of a child called William Campbell Preston Breckinridge.