what is the {point in time} for {Dakahlia Governorate} has {population} as {6492381} ?
The population of 6492381 in Dakahlia Governorate happened when?
When did the Dakahlia Governorate have the population 6492381?
SELECT ?q WHERE { ?y property:population ?g . resource:Dakahlia_Governorate property:population ?y . FILTER ( ?g = 6492381 ) . ?y property:point_in_time ?q }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q31068> .
?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> <6492381> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q31068 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '6492381')) . ?s pq:P585 ?value}