What is {population} of {Norfolk} that is {determination method} is {estimation process} ?
What is the method of estimating the population of Norfolk?
How is the population of Norfolk estimated?
SELECT ?w WHERE { ?c property:population ?w . ?c property:determination_method resource:estimation_process . resource:Norfolk property:population ?c }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q49231> .
?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> ?obj .
?statement <http://www.wikidata.org/entity/P459> <http://wikidata.dbpedia.org/resource/Q791801>
} 

SELECT ?obj WHERE { wd:Q49231 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P459 wd:Q791801 }