Question: Which organization is this American professional wrestler and former professional mixed martial artist, professional American football player and amateur wrestler born in 1977, who defended his Ultimate Fighting Championship twice, signed with?
Sentence (from "Stipe Miocic"): Miocic has defended the belt twice, and by doing so has tied the record for most successful title defenses held with Randy Couture, Tim Sylvia, Brock Lesnar, and Cain Velasquez.
Relevant evidence: Yes