Complex sentence: The basis of the story of Alraune dates to the Middles Ages in Germany.The humanoid shaped Mandrake root or Mandragora officinarum' was widely believed to be produced by the semen of hanged men under the gallows.
Split into simpler sentences: The basis of the story of Alraune dates to the Middles Ages in Germany. It was widely believed that the humanoid shaped Mandrake root or "Mandragora officinarum", is produced by the semen of hanged men under the gallows.