Task: Question Answering
Input (English): Context : Princess Lilian of Belgium (née Mary Lilian Baels, 28 November 1916 -- 7 June 2002) best known as Lilian, Princess of Réthy, was the second wife of King Leopold III of the Belgians. 
Question : What is Lilian, Princess of Réthy's spouse's name?
Output (English): Leopold III