what is the {point in time} for {Northern England} has {population} as {14933000} ?
When did Northern England have a population of 14933000?
At what point in time did Northern England have a population of 14933000?
SELECT ?w WHERE { ?c property:point_in_time ?w . FILTER ( ?r = 14933000 ) . ?c property:population ?r . resource:Northern_England property:population ?c }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1788657> .
?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> <14933000> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q1788657 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '14933000')) . ?s pq:P585 ?value}