Question: Who was the president under which people won the United States House of Representatives elections in 1790 ?
SPARQL:
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/United_States_House_of_Representatives_elections,_1790> <http://dbpedia.org/property/leader> ?x . ?x <http://dbpedia.org/property/president> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Person>}