Question: What is the determination method that Bilbao has the population of 351629.0?
Paraphrase: By what method was the population of 351629.0, in Bilbao, determined?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q8692 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '351629.0')) . ?s pq:P459 ?value}