Question: Which recent graduate of Grêmio F.B.P.A. Academy has gone on to become a defensive midfielder for the Brazil national team?
{'answer': 'Lucas Leiva', 'supporting_facts': [['Grêmio F.B.P.A. Academy', 0], ['Grêmio F.B.P.A. Academy', 2], ['Lucas Leiva', 0]]}