Task: Question Generation
Input (English): Johann Leopold, Hereditary Prince of Saxe-Coburg and Gotha (Johann Leopold William Albert Ferdinand Victor; 2 August 1906 -- 4 May 1972) was the eldest son of Charles Edward, Duke of Saxe-Coburg and Gotha and Princess Victoria Adelaide of Schleswig-Holstein-Sonderburg-Glucksburg.
Output (English): Who is the mother of Johann Leopold, Hereditary Prince of Saxe-Coburg and Gotha?