What is {date of birth} and {date of death} of {{Louis IX of France} has {child} as {Blanche of France, Infanta of Castile}}
what year was Blanche of France, Infanta of Castile, child of Louis IX of France, born and what year did she die?
What is the date of birth of the child of Louis IX of France named Blanche of France, Infanta of Castile and what is her date of death?
SELECT ?z ?l WHERE { ?n property:date_of_death ?l . resource:Louis_IX_of_France property:child ?n . ?n property:date_of_birth ?z . ?n property:child resource:Blanche_of_France,_Infanta_of_Castile }
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