What is {head of government} of {Texas} that is {end time} is {2015-1-20} ?
Who was the head of government in Texas in 2015-1-20?
SELECT ?obj WHERE { wd:Q1439 p:P6 ?s . ?s ps:P6 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'2015')) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1439> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P6> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P582> <2015-1-20>
} 

name the head of government in Texas in 2015-1-20