When was Margaret of France, daughter of Louis IX of France born and when did she die?
SELECT ?value1 ?value2 WHERE { wd:Q346 p:P40 ?s . ?s ps:P40 wd:Q457111 . ?s pq:P569 ?value1 . ?s pq:P570 ?value2 }
louis ix of france: Q346 margaret of france, duchess of braban: Q457111