What is {population} of {Mississippi} that is {point in time} is {2000-0-0} ?
In 2000, what was Mississippi's population?
What was the population of Mississippi as of the year 2000?
SELECT ?g WHERE { ?y property:point_in_time ?p . FILTER ( CONTAINS ( YEAR ( ?p ) , '2000' ) ) . resource:Mississippi property:population ?y . ?y property:population ?g }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1494> .
?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:Q1494 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'2000')) }