What is {date of death} of {Callimachus} that is {sourcing circumstances} is {circa} ?
When did Callimachus pass away?
When did Callimachus die?
SELECT ?h WHERE { ?z property:sourcing_circumstances resource:circa . resource:Callimachus property:date_of_death ?z . ?z property:date_of_death ?h }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q192417> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P570> .
?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:Q192417 p:P570 ?s . ?s ps:P570 ?obj . ?s pq:P1480 wd:Q5727902 }