Question: Vitor Belfort was scheduled to fight which competitor for various groups including PRIDE, Pancrase, M-1 Global, World Series of Fighting, and Professional Fighters League?
Sentence (from "UFC 126"): Belfort was originally scheduled to compete against Silva on January 2, 2010 at UFC 108, but due to an injury sustained by Silva, the fight had to be postponed until February 6, 2010 at UFC 109 and April 10, 2010 at UFC 112, respectively.
Relevant evidence: No