Question: What company's leader is Edwin Catmull?
SPARQL:
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/property/keyPeople> <http://dbpedia.org/resource/Edwin_Catmull>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Company>}