What is {population} of {Fortaleza} that is {point in time} is {1991-0-0} ?
What was Fortaleza's population in 1991?
What was the population of Fortaleza in 1991?
SELECT ?m WHERE { FILTER ( CONTAINS ( YEAR ( ?y ) , '1991' ) ) . ?k property:population ?m . ?k property:point_in_time ?y . resource:Fortaleza property:population ?k }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q43463> .
?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> <1991-0-0>
} 

SELECT ?obj WHERE { wd:Q43463 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1991')) }