What is {population} of {Sioux Falls} that is {point in time} is {2000-0-0} ?
Mention the population of Sioux Falls in the year 2000?.
What was the population of Sioux Falls in 2000?
SELECT ?o WHERE { ?q property:point_in_time ?f . resource:Sioux_Falls property:population ?q . FILTER ( CONTAINS ( YEAR ( ?f ) , '2000' ) ) . ?q property:population ?o }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q131335> .
?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> <2000-0-0>
} 

SELECT ?obj WHERE { wd:Q131335 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'2000')) }