Question: List all important people of the non profit organization which has Hilary Clinton as a key person ?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/keyPeople> <http://dbpedia.org/resource/Hillary_Clinton> . ?x <http://dbpedia.org/property/keyPeople> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Non-ProfitOrganisation>}