What is {date of birth} of {John Chrysostom} that is {sourcing circumstances} is {circa} ?
What is John Chrysostom's birthday?
For sourcing circumstances what is the birth date of John Chrysostom?
SELECT ?x WHERE { ?p property:sourcing_circumstances resource:circa . resource:John_Chrysostom property:date_of_birth ?p . ?p property:date_of_birth ?x }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q43706> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P569> .
?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/Q5727902>
} 

SELECT ?obj WHERE { wd:Q43706 p:P569 ?s . ?s ps:P569 ?obj . ?s pq:P1480 wd:Q5727902 }