Question: Antônio Carlos Silva, is a Brazilian mixed martial artist who formerly competed in the heavyweight division of the UFC, known for being one of the five men, along with Fabrício Werdum, a Brazilian mixed martial artist and former Heavyweight Champion, of which organization?
{'answer': 'UFC', 'supporting_facts': [['Antônio Silva (fighter)', 3], ['Fabrício Werdum', 0]]}