
Here's a complex question that requires someone to reason about the input, can you answer it?
Princess Maria Gabriella of Savoy, is the middle daughter of Italy's last king, Umberto II, and Marie José of Belgium, the "May Queen", and a sister of which pretender to their father's throne, the only son of Umberto II, the last King of Italy, and his wife, Marie-José of Belgium?


Vittorio Emanuele of Savoy, Prince of Naples
