Question: On what date was the NHL Entry Draft held that resulted in the Avalanche selecting the first draft choice overall in 2013?
{'answer': 'June 30, 2013', 'supporting_facts': [['2013 NHL Entry Draft', 0], ['2013 NHL Entry Draft', 1], ['2013 NHL Entry Draft', 2], ['Nathan MacKinnon', 0], ['Nathan MacKinnon', 1]]}