Question: The 2015–16 Xavier Musketeers women's basketball team represented Xavier University during the 2015–16 NCAA Division I women's basketball season, they were third year members of the newly reorganized Big East Conference, a collegiate athletic conference that competes in NCAA Division I in all sports except football, and has been officially recognized as a Division I multi-sport conference, effective on which date?
{'answer': 'August 1, 2013', 'supporting_facts': [["2015–16 Xavier Musketeers women's basketball team", 1], ['Big East Conference', 1]]}