what is the {determination method} for {Naples} has {population} as {989789.0} ?
How was the population of Naples determined to be 989789?
What method  was used the to determine the population of Naples as 989789.0?
SELECT ?h WHERE { ?v property:population ?d . FILTER ( ?d = 989789.0 ) . resource:Naples property:population ?v . ?v property:determination_method ?h }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q2634> .
?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> <989789.0> .
?statement <http://www.wikidata.org/entity/P459> ?value. 
} 

SELECT ?value WHERE { wd:Q2634 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '989789.0')) . ?s pq:P459 ?value}