what is the {point in time} for {Las Palmas de Gran Canaria} has {population} as {383050.0} ?
What date did Las Palmas de Gran Canaria have a population of 383,050?
When did Las Palmas de Gran Canaria have a population of 383050.0?
SELECT ?i WHERE { ?p property:population ?l . ?p property:point_in_time ?i . FILTER ( ?l = 383050.0 ) . resource:Las_Palmas_de_Gran_Canaria property:population ?p }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q11974> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1082> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <383050.0> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q11974 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '383050.0')) . ?s pq:P585 ?value}