What is {population} of {Greenland} that is {point in time} is {1969-0-0} ?
What is Greenland's population in 1969-0-0?
In 1969-0-0 what is Greenland's population?
SELECT ?g WHERE { ?g property:population ?g . FILTER ( CONTAINS ( YEAR ( ?t ) , '1969' ) ) . ?g property:point_in_time ?t . resource:Greenland property:population ?g }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q223> .
?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> <1969-0-0>
} 

SELECT ?obj WHERE { wd:Q223 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1969')) }