When is date of death and date of birth of Louis IX of France who has child as John Tristan, Count of Valois?
SELECT ?value1 ?value2 WHERE { wd:Q346 p:P40 ?s . ?s ps:P40 wd:Q648617 . ?s pq:P570 ?value1 . ?s pq:P569 ?value2 }
louis ix of france: Q346 john tristan, count of valois: Q648617