Question: What is the birth date of this retired American mixed martial arts fighter and professional wrestler, who was attracted to the event ARt of War Fighting Championship?
Sentence (from "Art of War Fighting Championship"): Its largest event was Art of War 12 - Invincible, held at the National Olympic Sports Center Auditorium in Beijing on May 23, 2009 to an audience of around 6,000 fans.
Relevant evidence: No