When was Frederick William I of Prussia's child Louisa Ulrika of Prussia's date of birth and death?
SELECT ?value1 ?value2 WHERE { wd:Q105013 p:P40 ?s . ?s ps:P40 wd:Q234251 . ?s pq:P569 ?value1 . ?s pq:P570 ?value2 }
frederick william i of prussia: Q105013 louisa ulrika of prussia: Q234251