When did the child of Pedro I, Isabel Maria de Alcântara Brasileira, die and when was she born?
SELECT ?value1 ?value2 WHERE { wd:Q939 p:P40 ?s . ?s ps:P40 wd:Q3154857 . ?s pq:P569 ?value1 . ?s pq:P570 ?value2 }
pedro i of brazil: Q939 isabel maria de alcântara, duchess of goiás: Q3154857