Question: At what point in time Baja California had the population of 48327 people?
Paraphrase: When was it that Baja, CA had a population of 48327 people?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q58731 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '48327.0')) . ?s pq:P585 ?value}