Question: Stipe Miocic ( ; born August 19, 1982) is an American professional mixed martial artist currently competing in the UFC, Miocic has defended the belt twice, and by doing so has tied the record for most successful title defenses held with which American professional wrestler and former professional mixed martial artist, professional American football player and amateur wrestler who is currently signed with WWE?
{'answer': 'Brock Edward Lesnar', 'supporting_facts': [['Stipe Miocic', 3], ['Brock Lesnar', 0]]}