what is the {point in time} for {Madison} has {population} as {6611.0} ?
Mention the year in which Madison have population of 6611?
When did Madison have a population of 6611?
SELECT ?p WHERE { ?e property:point_in_time ?p . resource:Madison property:population ?e . FILTER ( ?q = 6611.0 ) . ?e property:population ?q }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q43788> .
?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> <6611.0> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q43788 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '6611.0')) . ?s pq:P585 ?value}