what is the {point in time} for {Luxembourg} has {population} as {57822.0} ?
When did Luzembourg have a population of 57822?
In what year Luzembourg had a population of 57822?
SELECT ?m WHERE { ?t property:point_in_time ?m . ?t property:population ?t . FILTER ( ?t = 57822.0 ) . resource:Luxembourg property:population ?t }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1842> .
?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> <57822.0> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q1842 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '57822.0')) . ?s pq:P585 ?value}