Question: Where did the wrestler trained by Ring of Honour get billed?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/trainer> <http://dbpedia.org/resource/Ring_of_Honor> . ?x <http://dbpedia.org/property/billed> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Athlete>}