Question: Who owns the schools which have a penguin as its mascot?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/mascot> <http://dbpedia.org/resource/Penguin> . ?x <http://dbpedia.org/ontology/authority> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/School>}