What is {place of birth} of {John Perry Barlow} that is {sourcing circumstances} is {near} ?
John Perry Barlow's birth place?
What is the birth place of John Perry Barlow?
SELECT ?w WHERE { ?u property:place_of_birth ?w . ?u property:sourcing_circumstances resource:near . resource:John_Perry_Barlow property:place_of_birth ?u }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q534428> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P19> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P1480> <http://wikidata.dbpedia.org/resource/Q21818619>
} 

SELECT ?obj WHERE { wd:Q534428 p:P19 ?s . ?s ps:P19 ?obj . ?s pq:P1480 wd:Q21818619 }