What is {population} of {England} that is {point in time} is {2015-0-0} ?
How many people lived in England in 2015?
What is the population of England in 2015?
SELECT ?z WHERE { resource:England property:population ?n . ?n property:population ?z . FILTER ( CONTAINS ( YEAR ( ?g ) , '2015' ) ) . ?n property:point_in_time ?g }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q21> .
?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> ?obj .
?statement <http://www.wikidata.org/entity/P585> <2015-0-0>
} 

SELECT ?obj WHERE { wd:Q21 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'2015')) }