Question: Steven Levert "Steve" Clarkson (born October 31, 1961) is an American football coach, Clarkson has tutored Matthew Montgomery Barkley, an American football quarterback who is currently a free agent, born on which date?
{'answer': 'September 8, 1990', 'supporting_facts': [['Steve Clarkson', 2], ['Matt Barkley', 0]]}