Question: Who is the person whose opponent's father is Newman Haynes Clanton?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/parent> <http://dbpedia.org/resource/Newman_Haynes_Clanton> . ?uri <http://dbpedia.org/ontology/opponent> ?x  . }
Answer: The person whose opponent's parent is Newman Haynes Clanton is [Wyatt Earp].