Question: Who is  office holder of constituencies Duboce Triangle and Noe Valley ?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?uri <http://dbpedia.org/property/constituency> <http://dbpedia.org/resource/Duboce_Triangle,_San_Francisco> . ?uri <http://dbpedia.org/property/constituency> <http://dbpedia.org/resource/Noe_Valley,_San_Francisco> . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/OfficeHolder>}