What is the ethnicity of the people working for the Philippines house of representatives?
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/occupation> <http://dbpedia.org/resource/House_of_Representatives_of_the_Philippines> . ?x <http://dbpedia.org/ontology/ethnicity> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Person>}
House_of_Representatives_of_the_Philippines