Question: When did Botswana have a population of 1,986,700?
Paraphrase: Botswana had a population of 1,986,700 in what year?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q963 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '1.9867e+06')) . ?s pq:P585 ?value}