Question: Which tournament won by Diego Sanchez in the middleweight category involved mixed martial arts fighters who were trained in two separate teams by UFC Light Heavyweight fighters Chuck Liddell and Randy Couture?
Sentence (from "Frank Shamrock"): Shamrock was the first to hold the UFC Middleweight Championship (later renamed the UFC Light Heavyweight Championship) and retired as the four-time defending undefeated champion.
Relevant evidence: No