what is the {point in time} for {Uruguay} has {population} as {3.03105e+06} ?
What year did Uruguay have a population of 3.03105e+06?
When did Uruguay have a population of 3.03105e+06?
SELECT ?o WHERE { FILTER ( ?u = 3.03105e+06 ) . ?b property:population ?u . resource:Uruguay property:population ?b . ?b property:point_in_time ?o }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q77> .
?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> <3.03105e+06> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q77 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '3.03105e+06')) . ?s pq:P585 ?value}