Question: Which college has been attended  by both Mr. Hubert Wiggs and Mr. Alvin Bell?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { res:Hubert_Wiggs onto:college ?uri. res:Alvin_Bell onto:college ?uri . }