what is the {point in time} for {Cardiff} has {population} as {346100.0} ?
WHat year did Cardiff have a population of 346100
When Cardiff has its population 346100.0?
SELECT ?z WHERE { ?e property:population ?p . ?e property:point_in_time ?z . FILTER ( CONTAINS ( ?p , '346100.0' ) ) . resource:Cardiff property:population ?e }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q10690> .
?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> <346100.0> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q10690 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '346100.0')) . ?s pq:P585 ?value}