Question: What year was the mixed martial artist born, who was defeated by the former Tachi Palace Fights Featherweight Champion?
Sentence (from "Tachi Palace Fights 8"): Tachi Palace Fights 8 was a mixed martial arts event held by Tachi Palace Fights (TPF) on February 18, 2011, at the Tachi Palace Hotel & Casino in Lemoore, California.
Relevant evidence: No