Question: What is the official residence of the senator who is the deputy of Everett Dirksen?
SPARQL:
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Everett_Dirksen> <http://dbpedia.org/property/deputy> ?x . ?x <http://dbpedia.org/ontology/residence> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Senator>}