Question: Did the head of Government for Montreal start in 2001-1-1
Paraphrase: when was a  the head of Government for Montreal start in 2001-1-1?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q340 p:P6 ?s . ?s ps:P6 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'2002')) }