what is the {point in time} for {Maule Region} has {population} as {836141.0} ?
What year was the Maule Region's population 836141.0?
When did Maule Region have a population of 836141.0?
SELECT ?q WHERE { FILTER ( ?q = 836141.0 ) . ?i property:population ?q . ?i property:point_in_time ?q . resource:Maule_Region property:population ?i }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q2166> .
?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> <836141.0> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q2166 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '836141.0')) . ?s pq:P585 ?value}