what is the {point in time} for {South Korea} has {population} as {2.72617e+07} ?
In what year did South Korea have a population of 2.72617e+07?
When did South Korea have a population of 2.72617e+07?
SELECT ?a WHERE { ?a property:population ?f . ?a property:point_in_time ?a . resource:South_Korea property:population ?a . FILTER ( CONTAINS ( ?f , '2.72617e+07' ) ) }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q884> .
?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> <2.72617e+07> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q884 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '2.72617e+07')) . ?s pq:P585 ?value}