Question: What was the nationality of the mixed martial artist who defeated Trent Jenkins in the first ever fight in UFC history?

full_context: Document 1: Dan Henderson: Daniel Jeffery Henderson (born August 24, 1970) is an American former mixed martial artist and Olympic wrestler, who last competed as a middleweight in the Ultimate Fighting Championship. He was the last Strikeforce Light Heavyweight Champion and was the last Welterweight (80 kg ) and Middleweight (95 kg ) champion of Pride Fighting Championships. Additionally, Henderson was the Brazil Open '97 Tournament Champion, the UFC 17 Middleweight Tournament Champion, the Rings: King of Kings 1999 Tournament Champion and the Pride Weltwerweight Grand Prix Tournament Champion. During his career, Henderson also challenged for the UFC Middleweight Championship (2x), the UFC Light Heavyweight Championship and the Strikeforce Middleweight Championship. He was the first mixed martial artist to concurrently hold two titles in two different weight classes in a major MMA promotion. At the time of his retirement after UFC 204, he was the oldest fighter on the UFC roster. Known to be one of the greatest mixed martial artists of all time having defeated a total of seventeen MMA world champions across four major MMA promotions (UFC, PRIDE FC, Strikeforce, and RINGS).
Document 2: Chris Leben: Christian Cyrus Leben (born July 21, 1980) is a retired American mixed martial artist. He formerly competed with the UFC as a Middleweight, compiling a record of 12-10 in 22 appearances for the organization. Leben first appeared in the inaugural season of "The Ultimate Fighter" reality series, and has also fought in the now-defunct WEC. He began his UFC career with five victories in a row before suffering a knockout loss to future UFC Middleweight Champion Anderson Silva. Leben was the inaugural WEC Middleweight Champion.
Document 3: The Ultimate Fighter 1: The debut season of The Ultimate Fighter (later designated The Ultimate Fighter 1) premiered on January 17, 2005. Sixteen mixed martial arts fighters (eight Light Heavyweights weighing from 186 to 205 lbs and eight Middleweights weighing from 171 to 185 lbs) were invited to participate in the show where they would reside together and train in two separate teams coached by UFC Light Heavyweight fighters Chuck Liddell and Randy Couture. The teams would compete in physical challenges, segments hosted by singer Willa Ford, to determine which team would have the right to pair one of their own fighters against an opponent of their choice in the same weight class, with the loser being eliminated.
Document 4: Forrest Griffin: Forrest Griffin (born July 1, 1979) is an American retired mixed martial artist and a UFC Hall of Famer. Since 2005, he has been signed to the Ultimate Fighting Championship where he is a former UFC Light Heavyweight Champion. Griffin, a former Georgia police officer, first rose to prominence after winning the first season of "The Ultimate Fighter". In the tournament finals, he fought and defeated Stephan Bonnar in Forrest Griffin vs. Stephan Bonnar, which is widely credited as sparking the current success of the UFC. He went on to serve as a coach on "The Ultimate Fighter 7" opposite Quinton Jackson.
Document 5: Trent Jenkins: Trent Jenkins is an American mixed martial artist. He competed in the Middleweight division. Jenkins also was in the first ever fight in UFC history losing to Jason DeLucia.
Document 6: Chuck Liddell: Charles David "Chuck" Liddell (born December 17, 1969) is an American retired mixed martial artist and former UFC Light Heavyweight Champion. He has an extensive striking background in American Kenpo, Koei-Kan Karate, and kickboxing, as well as a grappling background in collegiate wrestling and Brazilian jiu-jitsu. He had 23 fights in the UFC; along with Randy Couture, he is widely credited for bringing MMA into the mainstream of American sports and entertainment. On July 10, 2009, he was inducted into the UFC Hall of Fame.
Document 7: Jennifer Trevino: Jennifer Trevino (Born September 30, 1983), is a Del Rio, TX native who is currently the only female Mixed Martial Arts (MMA) promoter in the state of Texas. To date, she is the first promoter to bring MMA to New Braunfels, TX and will be the first female to host an Amateur MMA event in San Antonio. She is the owner of Premiere Combat Group, an Amateur MMA organization based in New Braunfels, TX, and is the Marketing Manager for Gruene Harley-Davidson of New Braunfels, TX and Javelina Harley-Davidson of Boerne, TX.
Document 8: Jens Pulver: Jens Johnnie Pulver (born December 6, 1974) is an American professional mixed martial artist and undefeated boxer and kickboxer. Pulver was the inaugural UFC Lightweight Champion in addition to serving as the head coach on "The Ultimate Fighter 5" reality show against long-time rival B.J. Penn. In mixed martial arts, Pulver competed at the Lightweight, Featherweight, Bantamweight and Flyweight divisions in addition to competing at the Middleweight, Light Middleweight, and Welterweight divisions as a professional boxer. While perhaps best known for competing in the UFC, Pulver has also competed in Pride Fighting Championships, for the PRIDE 2005 Lightweight Grand Prix. He is to-date the youngest UFC Lightweight Champion in the UFC history, eventually relinquishing his title, after two defenses, due to a contract dispute. Pulver officially retired from combat sports in 2014. Pulver is considered the founder of the UFC lightweight division.
Document 9: Randy Couture: 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).
Document 10: B.J. Penn: Jay Dee "B.J." Penn (born December 13, 1978) is an American professional mixed martial artist and Brazilian Jiu-Jitsu practitioner. Penn debuted and competed in the Ultimate Fighting Championship (UFC), and later in K-1. Prior to fighting for the UFC, he became the first American Gold medalist of the World Jiu-Jitsu Championship. In mixed martial arts, Penn has competed in the Featherweight, Lightweight, Welterweight, and Middleweight divisions. As a former UFC Lightweight Champion and UFC Welterweight Champion, he is one of only three fighters in UFC history to win titles in multiple weight classes. Penn was also a Co-champion in the UFC 41 Lightweight Tournament, due to an eventual draw opposite Caol Uno in the tournament finale. Through his tenures as champion, Penn unofficially unified the UFC Lightweight Championship (against Sean Sherk) and broke the all-time lightweight title defense record. Penn was inducted into the UFC Hall of Fame, as the inaugural inductee in the Modern-Era Wing by career-long rival Matt Hughes, during "International Fight Week" in July 2015.
Document 11: Jason DeLucia: Jason DeLucia (born July 24, 1969) is a retired American mixed martial artist.
Document 12: Marcus Davis: Marcus Paul Davis (born August 24, 1973), is a retired American professional mixed martial artist and former professional boxer who is perhaps best known for competing in the UFC. A professional MMA competitor from 2003 until 2014, Davis also competed for Bellator MMA, the MFC, the Cage Fury Fighting Championships, and was a contestant on "The Ultimate Fighter 2".
Document 13: Frank Shamrock: Frank Shamrock (born Frank Alisio Juarez, III; December 8, 1972) is an American former mixed martial artist. 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. Shamrock was the No. 1 ranked pound for pound UFC fighter in the world during his reign as the UFC Middleweight Champion. Shamrock has won numerous titles in other martial arts organizations, including the interim King of Pancrase title, the WEC Light Heavyweight Championship and the Strikeforce Middleweight Championship.
Document 14: Bubba Jenkins: Bubba Jenkins (born February 5, 1988) is an American mixed martial artist and former collegiate wrestler. He grew up in Virginia Beach, Virginia and is well known for winning the 2011 NCAA Division I Championship at 157 lbs. for Arizona State University. Jenkins formally fought for the mixed martial arts promotion Bellator Fighting Championships in the featherweight division, after signing a long-term promotional agreement with the organization in May 2013. Jenkins is currently competing in the lightweight division of the Absolute Championship Berkut.
Document 15: The Ultimate Fighter 5: The Ultimate Fighter 5 was the fifth season of the Ultimate Fighting Championship produced reality television series "The Ultimate Fighter". As with the show's usual format, sixteen prospective mixed martial arts fighters were secluded in a house near Las Vegas, Nevada and trained together while participating in a single-elimination tournament, with the winner being awarded a six-figure UFC contract. This season featured only one weight class, lightweights (146–155 lb) and the fighters were divided into two teams; one coached by former UFC Lightweight Champion Jens Pulver and the other by former UFC Welterweight Champion and former lightweight champion B.J. Penn. The season was well-known among fans for the large number of fighters kicked off of the show.
ground_truth: American