What is {population} of {Marikina} that is {point in time} is {1960-2-15} ?
in 1960-2-15 Marikina  had a population of what?
What was the population of Marikina in 1960-2-15
SELECT ?y WHERE { ?e property:point_in_time ?p . resource:Marikina property:population ?e . ?e property:population ?y . FILTER ( CONTAINS ( YEAR ( ?p ) , '1960' ) ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q17175> .
?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> <1960-2-15>
} 

SELECT ?obj WHERE { wd:Q17175 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1960')) }