Question: Winter formal, also called Winterfest, Winter Ball, Sweethearts, Snow Ball, or Queen of Hearts Dance, is a dance held by high schools in the United States and Canada, at some schools, this dance may supplement or replace which informal dance sponsored by a high school, middle school or college, in which female students invite male students?
{'answer': 'Sadie Hawkins Dance', 'supporting_facts': [['Winter Formal', 2], ['Sadie Hawkins dance', 0]]}