What is the {reservoir} for {reservoir created} of {Oroville Dam}
When was the Oroville Dame build
 select distinct ?obj where { wd:Q1425594 wdt:P4661 ?obj . ?obj wdt:P31 wd:Q131681 } 
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1425594> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P4661> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?obj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q131681> } 
When was construction completed on the Oroville Dam?