Question: What nationality does the person with a notable victory over "The Chief" have?

full_context: Document 1: Hayato Fujita: Hayato Fujita (藤田 勇人 "Fujita Hayato", born September 20, 1986) is a Japanese professional wrestler, better known by his ring name, Fujita "Jr." Hayato (フジタ"Jr"ハヤト). Despite his small stature and physique for a professional wrestler, he is known for his toughness and hard shoot-style strikes.
Document 2: Peter Graham (fighter): Peter "The Chief" Graham (born 5 August 1975) is an Australian kickboxer, boxer and mixed martial artist.
Document 3: Kazuyuki Fujita: Kazuyuki Fujita (藤田 和之 , Fujita Kazuyuki ) (born October 16, 1970) is a Japanese professional wrestler, mixed martial artist and a former amateur wrestler. He has fought in mixed martial arts promotions including Pride Fighting Championships, K-1 and World Victory Road. He competes in mixed martial arts, shoot style wrestling and puroresu, and holds notable victories over Ken Shamrock, Gilbert Yvel, Mark Kerr, Bob Sapp, Karam Gaber, Peter Graham, and James Thompson.
Document 4: Kazushi Sakuraba: Kazushi Sakuraba (桜庭 和志 , Sakuraba Kazushi , born July 14, 1969) is a Japanese mixed martial artist and professional wrestler, currently signed to Rizin Fighting Federation. He has competed in traditional puroresu for New Japan Pro Wrestling and shoot-style competition for UWFi and Kingdom Pro Wrestling. He has fought in MMA competition in the Ultimate Fighting Championship, Pride Fighting Championships, Hero's and Dream. He is known as the "Gracie Hunter" or the "Gracie Killer" due to his wins over four members of the famed Gracie family: Royler Gracie, Renzo Gracie, Ryan Gracie, and Royce Gracie. In particular, Sakuraba is famous for his initial fight with Royce, which lasted ninety minutes.
Document 5: Global Fighting Championship: Global Fighting Championship (also known as GFC) was a UAE-based kickboxing and mixed martial arts (MMA) event. Fighters from around world on the roster include Badr Hari, Peter Aerts, Peter Graham, Dewey Cooper, Zabit Samedov. It was considered as one of the biggest kickboxing and MMA promotion in Middle East.<ref name="Emirates 24/7"> </ref>
Document 6: Minoru Fujita: Minoru Fujita (藤田 ミノル , Fujita Minoru ) is a Japanese professional wrestler contracted to Pro Wrestling Zero1, where he is a former AWA World Junior Heavyweight Champion, having won a tournament final against Takuya Sugawara.
Document 7: Anthony Mundine: Anthony Mundine (born 21 May 1975) is an Australian professional boxer and former rugby league player. In boxing he has held the WBA super-middleweight title twice between 2003 and 2008, as well as the IBO middleweight title from 2009 to 2010, and the WBA interim super-welterweight title from 2011 to 2012. Mundine is well known for his heated rivalries with fellow Australians Danny Green and Daniel Geale.
Document 8: Glaube Feitosa: Glaube Araújo Feitosa (born April 9, 1973) is a Brazilian former kickboxer and a kyokushin full contact karate practitioner who was competing in K-1. In 2005, Feitosa won K-1 World Grand Prix 2005 in Las Vegas tournament and was a K-1 World Grand Prix 2005 finalist. While living in Tokyo, Japan he fought and trained in the IKO1 Kyokushin - Team Ichigeki at the Ichigeki Plaza. Throughout his career he was known as one of the best non-champions to fight in the K-1, a position he earned with his wins over non-champion fighters, such as Ruslan Karaev, Musashi, Gary Goodridge and Junichi Sawayashiki. He also went the distance with some of the top fighters in his time, such as Peter Aerts, Remy Bonjasky, Semmy Schilt and Errol Zimmerman. He holds victories over Cheick Kongo and Alistair Overeem.
Document 9: Kyotaro Fujimoto: Kyotaro (Kyōtarō , born 23 June 1986) is a Japanese heavyweight boxer and former kickboxer. His real name is Kyotaro Fujimoto, and he had been using 3 other ring names before. He is known for his right hook which has knocked out many of his opponents. He is currently the K-1 Heavyweight Champion and has successfully defended the title against Peter Aerts at K-1 World Grand Prix 2010 in Yokohama. He was also the K-1 World Grand Prix 2008 in Fukuoka tournament finalist and K-1 Young Japan GP 2007 champion.
Document 10: Rick Cheek: Richard P. "Rick" Cheek (born October 4, 1977) is an American kickboxer and mixed martial artist who competes in the heavyweight division. A North American Muay Thai champion as an amateur, Cheek turned professional in 2005 and debuted in K-1 the same year. He holds notable wins over WSOF standout Dave Huckaba in MMA, 2001 K-1 Japan Grand Prix Champion Nicholas Pettas and multiple time world kickboxing champion Mike Sheppard
Document 11: Satoru Kitaoka: Satoru Kitaoka (北岡悟 , Kitaoka Satoru , born 4 February 1980) , is a Japanese shoot wrestler and mixed martial artist who most recently competed in the Lightweight division of RIZIN. A professional competitor since 2000, he has also competed for DREAM, Pancrase, DEEP, and World Victory Road. Kitaoka is renowned for his Catch wrestling abilities which he learned studying under two of Japan's most respected shoot wrestlers Masakatsu Funaki and Minoru Suzuki. In addition to mixed martial arts success, Kitaoka has also won several submission grappling tournaments, including being the reigning Brazilian jiu-jitsu and No-Gi Open Champion in both the 79.7 kg and Absolute divisions. In August 2008, he entered and won the 2008 Sengoku Lightweight Grand Prix. He is currently the DEEP Lightweight Champion.
Document 12: Samuel Peter: Samuel Okon Peter (born September 6, 1980) is a Nigerian-American professional boxer who held the WBC heavyweight title in 2008. He rose to prominence in his early career following a string of knockout wins, at a time when the titles of the heavyweight division were largely fragmented. In March 2008, Peter won a portion of the world heavyweight championship by knocking out Oleg Maskaev to win the WBC title. In October, in what would be his only defense of the title, Peter lost to a returning Vitali Klitschko, who stopped him in eight rounds. Peter is known for his rivalry with the Klitschko brothers, having faced Wladimir twice (in 2005 and 2010) and Vitali once.
Document 13: Mineo Fujita: Mineo Fujita is a Japanese professional wrestler. He currently works for Pro Wrestling Zero1, where he is a former International Junior Heavyweight and NWA World Junior Heavyweight Champion and NWA International Lightweight Tag Team Champion with Takuya Sugawara.
Document 14: Patrick Graham (boxer): Patrick Graham (born October 3, 1969 in Calgary, Alberta) is a retired Canadian heavyweight boxer. He is not known for his skill in boxing, but for his toughness, strength, good basic boxing skills and durability. His boxing idol was George Chuvalo. Although he did not have Chuvalo's durability, Graham showed resilience, and the ability to compete in the sport.
Document 15: Kiyoshi Tamura: Kiyoshi Tamura (田村潔司 , "Tamura Kiyoshi" , born December 17, 1969 in Okayama, Okayama) is a Japanese middleweight professional wrestler and mixed martial artist. 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. He has competed in some form or another for the following organizations: Universal Wrestling Federation, UWF International, Fighting Network RINGS, K-1, PRIDE, and U-STYLE, his own promotion, often fighting much larger opponents. In mixed martial arts, he holds notable victories over Renzo Gracie, Jeremy Horn, Ikuhisa Minowa, Masakatsu Funaki and Kazushi Sakuraba.
ground_truth: Japanese