Question: When did Belgium have a population of 11,150,516?
Paraphrase: In what year was Belgium's population 11,150,516?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q31 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '11150516')) . ?s pq:P585 ?value}