Who is the birth parent of Stalin's kid, when was the kid born, and what was his name?
SELECT ?value1 ?value2 WHERE { wd:Q855 p:P40 ?s . ?s ps:P40 wd:Q459216 . ?s pq:P25 ?value1 . ?s pq:P569 ?value2 }
joseph stalin: Q855 vasily dzhugashvili: Q459216