Question: Who was the head of government in Texas in 2015-1-20?
Paraphrase: name the head of government in Texas in 2015-1-20
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q1439 p:P6 ?s . ?s ps:P6 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'2015')) }