What is {electorate} of {General Santos} that is {point in time} is {2007-4-20} ?
For what electorate position did General Santos receive on 4-20-2007?
SELECT ?obj WHERE { wd:Q594275 p:P1831 ?s . ?s ps:P1831 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'2007')) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q594275> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1831> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P585> <2007-4-20>
} 

Which electorate position did General Santos begin on 4-20-2007?