SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/channel> <http://dbpedia.org/resource/NBC> . ?x <http://dbpedia.org/property/presenter> ?uri . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/TelevisionShow>}
Who all have been presenters on shows by the NBC?
SELECT DISTINCT ?n WHERE { ?o rdf:type ontology:Television_Show . ?o property:channel resource:N_B_C . ?o property:presenter ?n }
answer
The presenters of the television shows broadcasted by NBC are [answer].
[Ashton] is the host of the NBC television show.