question: What Japanese mixed martial artist and professional wrestler fought a former UFC Heavyweight Champion who was previously associated with Mark Coleman's Team Hammer House?
answer: Kenichi Yamamoto
context: Title: Kevin Randleman
  Passage: Kevin Christopher Randleman (August 10, 1971 – February 11, 2016) was an American mixed martial arts fighter and a former UFC Heavyweight Champion.  Randleman's background was in collegiate wrestling, and he competed in the heavyweight and light heavyweight classes.  Randleman had fought in the UFC, PRIDE, WVR, and Strikeforce.  He was previously associated with Mark Coleman's Team Hammer House, before training at Randy Couture's gym in Las Vegas, Nevada.
  Title: Kenichi Yamamoto (mixed martial artist)
  Passage: Kenichi Yamamoto (山本 喧一 , Yamamoto Ken'ichi ) is a Japanese mixed martial artist and professional wrestler.  Known for his pro wrestling career in UWF International, Yamamoto also competed against some of the best MMA fighters of his era in RINGS, Pride and the UFC, taking on Kevin Randleman, Genki Sudo and Pat Miletich, among others.
  Title: Frank Mir
  Passage: Francisco Santos "Frank" Mir, III (born May 24, 1979) is an American mixed martial artist, who competes for Bellator MMA in the Heavyweight division.  He formerly competed in the Ultimate Fighting Championship (UFC) for sixteen years.  A former UFC Heavyweight Champion, he currently holds the record for most fights, victories, and submissions in UFC Heavyweight history, and is tied for 4th most UFC victories overall.  Up until his release, Mir possessed the longest uninterrupted tenure of any fighter in UFC history.  He is the first man to knock out and submit Antônio Rodrigo Nogueira.
  Title: Renzo Gracie
  Passage: Renzo Gracie ( ; ] ; born March 11, 1967) is a Brazilian mixed martial artist and Brazilian Jiu-Jitsu practitioner.  A member of the Gracie family of Brazil, Renzo is a 6th Degree Black in Brazilian Jiu-Jitsu under Carlos Gracie Jr..  He is the son of Robson Gracie, grandson of Carlos Gracie, nephew of Carlos Gracie, Jr. grandnephew of Helio Gracie, and the 1st cousin once removed of Royce Gracie.  In mixed martial arts, Renzo has competed in the Ultimate Fighting Championship, Pride Fighting Championships, K-1, RINGS, and International Fight League (head-coaching the New York Pitbulls).  He holds notable victories over five former UFC Champions: Frank Shamrock (UFC Light Heavyweight Champion), Carlos Newton (UFC Welterweight Champion), Pat Miletich (UFC Welterweight Champion), Maurice Smith (UFC Heavyweight Champion), and Oleg Taktarov (UFC 6 Tournament Winner)
  Title: Mark Coleman
  Passage: Mark Daniel Coleman (born December 20, 1964) is a retired American mixed martial artist, professional wrestler, former NCAA collegiate wrestler and former Olympic amateur wrestler.  Known as The Hammer, he was the UFC 10 and UFC 11 tournament champion, the first UFC Heavyweight Champion, and the Pride Fighting Championships 2000 Open Weight Grand Prix champion.  At UFC 82 Coleman was inducted into the UFC Hall of Fame.  At the age of retirement he was taking 150,000 USD salary per year.
  Title: Randy Couture
  Passage: Randall "Randy" Duane Couture ( ; born June 22, 1963) is an American actor, retired United States Army Sergeant, retired mixed martial artist and former collegiate and Greco-Roman wrestler.  During his tenures in the Ultimate Fighting Championship (UFC), Couture became a three-time UFC Heavyweight Champion, two-time UFC Light Heavyweight Champion, an interim UFC Light Heavyweight Champion and the UFC 13 Heavyweight Tournament Winner.  Couture is the first of only three fighters to hold two UFC championship titles in two different divisions (along with B.J. Penn and Conor McGregor).
  Title: Josh Barnett
  Passage: Joshua Lawrence Barnett (born November 10, 1977) is an American mixed martial artist and professional wrestler who previously competed in the Heavyweight division of the UFC.  He is the former UFC Heavyweight Champion, as well as the inaugural and current Metamoris Heavyweight Champion.  He has also won the King of Pancrase Openweight Championship and was a finalist in the PRIDE 2006 Openweight Grand Prix and the Strikeforce Heavyweight Grand Prix Championship.  Barnett mixed martial arts record of "over 50-8" when both sanctioned and unsanctioned bouts are counted.  He has also competed in Affliction, World Victory Road, DREAM and Impact FC.
  Title: Antônio Rodrigo Nogueira
  Passage: Antônio Rodrigo Nogueira (] , born June 2, 1976), better known as Minotauro, is a semi-retired Brazilian mixed martial artist known for his technical mastery of Brazilian jiu-jitsu.  He won most of his fights via submissions.  He competed in the heavyweight division of the Ultimate Fighting Championship (UFC), where he is a former Interim UFC Heavyweight Champion.  He is the twin brother of UFC fighter Antônio Rogério Nogueira.  Nogueria rose to prominence in the Japanese promotion Pride Fighting Championships, where he was the first Pride Heavyweight Champion from November 2001 to March 2003, as well as a 2004 PRIDE FC Heavyweight Grand Prix Finalist.  He is one of only three men to have held championship titles in both Pride Fighting Championships and the Ultimate Fighting Championship (the others being Mauricio Rua and Mark Coleman).
  Title: Kim Min-soo (judoka)
  Passage: Kim Min-soo (born January 22, 1975) is a South Korean former judoka, professional mixed martial artist and K-1 kickboxer.  He is best known for becoming a K-1 World Grand Prix 2006 Finalist and also winning the 1996 Summer Olympics in Atlanta earning a Silver Medal in Judo.  He is also known for his fights with current WWE professional wrestler and former UFC Heavyweight Champion and veteran Brock Lesnar, former WWE wrestler and K-1 fighter Sean O'Haire and former NFL football player turned K-1 kickboxer and New Japan Pro Wrestling contender Bob Sapp.  Min-soo holds a notable kickboxing win over former UFC fighter Scott Junk.  He announced his retirement from contact sports in 2011 with brief stints as color commentator for Japanese and Korean mixed martial arts and professional wrestling events.  Kim is also the Judo head coach for Korean Top Team.
  Title: Team Hammer House
  Passage: Team Hammer House is a mixed martial arts team operating out of Columbus, Ohio, made up of mostly former NCAA wrestlers.  While Hammer House focuses on amateur wrestling they do have cross training deals with notable fighters and camps such as Matt Serra, Pat Miletich and Xtreme Couture Mixed Martial Arts.  Founded by former UFC champion Mark Coleman, Team Hammer House has attracted such mixed martial arts fighters as Kevin Randleman and Phil Baroni.
citations: Kevin Randleman Kenichi Yamamoto (mixed martial artist)