What is {population} of {Prato} that is {point in time} is {2017-1-1} ?
In 2017-1-1, what was Prato's population?
what is the population of prato in 2017-1-1?
SELECT ?l WHERE { resource:Prato property:population ?u . FILTER ( CONTAINS ( YEAR ( ?s ) , '2017' ) ) . ?u property:point_in_time ?s . ?u property:population ?l }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q13377> .
?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> <2017-1-1>
} 

SELECT ?obj WHERE { wd:Q13377 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'2017')) }