Question: The mother of Joseph Ferdinand of Bavaria died in what year? 
Sentence (from "Maria Antonia of Austria"): Maria Antonia of Austria (Maria Antonia Josepha Benedicta Rosalia Petronella; 18 January 1669 – 24 December 1692) was the eldest daughter and only surviving child of Holy Roman Emperor Leopold I and his wife Margaret Theresa of Spain.
Relevant evidence: Yes