Question: "Happy Birthday to You", more commonly known as simply "Happy Birthday", is a song that is traditionally sung to celebrate the anniversary of a person's birth, the melody has traditionally been attributed to American sisters Patty and Mildred Jane Hill, an American songwriter and musicologist, in what year?
{'answer': '1893', 'supporting_facts': [['Happy Birthday to You', 3], ['Mildred J. Hill', 0]]}