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

Context articles: Peter Graham (fighter)
Hubert Westmoreland
Frisol (cycling team)
George Hackwill
1982–83 European Cup Winners' Cup
Venezuelan nationality law
Kazuyuki Fujita
Seagram (racehorse)
Miko–de Gribaldy
Multiple citizenship

Peter "The Chief" Graham (born 5 August 1975) is an Australian kickboxer, boxer and mixed martial artist.
Hubert Westmoreland (January 28, 1915October 26, 2006) was a mechanic that became a car owner in the beginning of NASCAR.
 His role as a car owner ran from 1949 to 1964.
 In that time his cars were driven to four first -place finishes.
 His most notable victory was by Johnny Mantz, who drove his Plymouth to victory in the inaugural Southern 500 at Darlington Raceway in Darlington, South Carolina.
 His best finish at Daytona Beach Road Course was third, although when Mantz won the 1950 Southern 500, it was like winning the Daytona 500.
 Daytona International Speedway was not around until 1959.
Frisol was a Dutch professional cycling team that existed from 1973 to 1977.
 Its main sponsor was Dutch oil trader Frisol.
 Its most notable victory was Jan Raas's win of the 1977 Milan–San Remo.
Captain George Henry Hackwill {'1': ", '2': ", '3': ", '4': "} (22 December 1892 – 4 July 1954) was an English World War I flying ace credited with nine aerial victories.
 His most notable victory was his role in shooting down a German Gotha G.V, over Essex on the night of 28 January 1918.
 This was the first victory ever achieved in combat between aircraft at night.
The season 1982-83 of the European Cup Winners' Cup was won by Aberdeen FC in an extra-time victory against Real Madrid.
 Alex Ferguson's young side defeated the Spanish giants after a notable victory over Bayern Munich in the quarter-final.
 Having conquered the domestic game in Scotland, by defeating the European Cup holders Hamburger SV to win the UEFA Super Cup, Aberdeen went on to become the only Scottish team to win two European trophies, a record which still stands today.
Venezuelan nationality law is based on the principle of Jus soli.
 Any person born in Venezuela acquires Venezuelan citizenship at birth, irrespective of nationality or status of parents.
 Nationality law is regulated by Section 1 of Chapter 2 of the Constitution of Venezuela and by the Nationality and Citizenship Act of 2004 .
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.
Seagram (c.1980–1997) was a New Zealand racehorse, famous for his victory in the 1991 Grand National sponsored by his namesake Seagram.
 This was his only notable victory.
 He came close to winning the Whitbread and was pulled up at the 27th fence in the 1992 Grand National.
 He lived in retirement until his death at the age of 17.
Miko–de Gribaldy was a Belgian professional cycling team that existed from 1974 to 1976.
 The directeur sportif was former professional rider Jean de Gribaldy, who gave his name to the the team.
 For the final year-and-a-half of its history, its main sponsor was French ice cream manufacturer , whose part-owner, Louis Ortiz, was a friend of de Gribaldy.
 Its most notable victory was the 1974 Liège–Bastogne–Liège with Georges Pintens.
Multiple citizenship, also called dual citizenship or multiple nationality or dual nationality, is a person's citizenship status, in which a person is concurrently regarded as a citizen of more than one state under the laws of those states.
 There is no international convention which determines the nationality or citizen status of a person, which is defined exclusively by national laws, which vary and can be inconsistent with each other.
 Multiple citizenship arises because different countries use different, and not necessarily mutually exclusive, criteria for citizenship.
 Colloquial speech refers to people "holding" multiple citizenship but technically each nation makes a claim that this person be considered its national.