what is the {determination method} for {Anchorage} has {population} as {298294.0} ?
How was Anchorage's population of 298294 determined?
How was the population of 298294 determined for Anchorage?
SELECT ?g WHERE { ?p property:population ?o . ?p property:determination_method ?g . resource:Anchorage property:population ?p . FILTER ( ?o = 298294.0 ) }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q39450> .
?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> <298294.0> .
?statement <http://www.wikidata.org/entity/P459> ?value. 
} 

SELECT ?value WHERE { wd:Q39450 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '298294.0')) . ?s pq:P459 ?value}