What is {population} of {South Dakota} that is {point in time} is {2000-0-0} ?
South Dakota had how many residents in the year 2000?
What was the population of South Dakota in the year 2000?
SELECT ?f WHERE { FILTER ( CONTAINS ( YEAR ( ?g ) , '2000' ) ) . ?w property:population ?f . ?w property:point_in_time ?g . resource:South_Dakota property:population ?w }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1211> .
?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:Q1211 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'2000')) }