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?
Sentence (from "Fabrício Werdum"): Werdum has competed in PRIDE, the UFC, Strikeforce, and Jungle Fight.
Relevant evidence: No