Question: Which Japanese mixed martial artist is the former DREAM Openweight Grand Prix Champion was once defeated by Kiyoshi Tamura?
Sentence (from "Kiyoshi Tamura"): Once a student of legendary pro wrestlers Billy Robinson, Nobuhiko Takada and Akira Maeda, Tamura is known for his skill in catch wrestling as well as his ability to deliver exciting professional wrestling bouts.
Relevant evidence: No