what is the {determination method} for {Denver} has {population} as {620018.0} ?
How can you verify that Denver's population is 620018?
What is used for Denver to find out their population is 620018.0?
SELECT ?m WHERE { resource:Denver property:population ?w . FILTER ( ?f = 620018.0 ) . ?w property:determination_method ?m . ?w property:population ?f }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q16554> .
?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> <620018.0> .
?statement <http://www.wikidata.org/entity/P459> ?value. 
} 

SELECT ?value WHERE { wd:Q16554 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '620018.0')) . ?s pq:P459 ?value}