Question: what is the {point in time} for {Coimbatore} has {population} as {1601438} ?
Paraphrase: In what point in time did Coimbatore have a population of 1601438?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q9885 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '1601438')) . ?s pq:P585 ?value}