Question: Who is the Las Vegas businessman and reality television personality, currently retired, that co-owns a pawn shop Chumlee currently works at?

full_context: Document 1: List of Pawn Stars episodes: "Pawn Stars" is an American reality television series that premiered on History on July 19, 2009. The series is filmed in Las Vegas, Nevada, where it chronicles the activities at the World Famous Gold & Silver Pawn Shop, a 24-hour family business operated by patriarch Richard "Old Man" Harrison, his son Rick Harrison, Rick's son Corey "Big Hoss" Harrison, and Corey's childhood friend, Austin "Chumlee" Russell.
Document 2: Tycoon Talk: Tycoon Talk is a business celebrity talk show broadcast on Hong Kong's TVB Pearl by film producer / host Sean Lee-Davies, who directed and hosted two series of eight episodes featuring Hong Kong's most recognised billionaires, business leaders and entrepreneurs. In those two series, Lee-Davies gained access to not only their work environment but also their private lives. He challenged American businessman James E. Thompson to a push-up challenge; played pool with Bruce Rockowitz, co-founder of Pure; and challenged the CEO of Mission Hills golf Dr. Ken Chu to a round. He accompanied Tai Sang Bank Director Philip Ma on a helicopter ride around Hong Kong island; and went for a drive with tycoon Sir Gordon Wu in a Nissan Leaf car.
Document 3: Pawn Stars Australia: Pawn Stars Australia is the Australian adaption of the American series of the same name. It premiered on 21 July 2015 on A&E. The Australian version is the third international spin-off after Pawn Stars UK and Pawn Stars South Africa.
Document 4: Jesse James (customizer): Jesse Gregory James (born April 19, 1969) is an American television personality and former CEO of Austin, Texas-based Austin Speed Shop. James was the host of the reality TV shows "Jesse James Is a Dead Man" on Spike TV and "Monster Garage" on the Discovery Channel, and the focus of the documentary "Motorcycle Mania", also on Discovery. Jesse James also appeared in the "Tony Hawk's Underground 2" video game, and was the focus of a show chronicling some of the custom builds at Austin Speed Shop in his TV series, "Jesse James: Outlaw Garage", which ran a shortened single season in 2012 on the Discovery Channel before being canceled.
Document 5: Poker Hall of Fame: The Poker Hall of Fame is the hall of fame of professional poker in the United States. Founded in Las Vegas, it was created in 1979 by Benny Binion, the owner of the Horseshoe Casino, to preserve the names and legacies of the world's greatest poker players and to serve as a tourist attraction to his casino. Binion was known for the creative ways in which he marketed his casino. In 1949, he convinced Johnny Moss and Nick "The Greek" Dandolos to play high-stakes poker heads up where the public could watch them. In 1970, he invited a group of poker players to compete in what would be the first World Series of Poker (WSOP). When Harrah's Entertainment, now known as Caesars Entertainment, acquired the rights to the WSOP in 2004, it also assumed ownership of the Poker Hall of Fame. Currently, membership in the Poker Hall of Fame is handled directly by the WSOP.
Document 6: Corey Harrison: Richard Corey "Big Hoss" Harrison (born April 27, 1983) is an American businessman and reality television personality, known as a cast member of the History TV series "Pawn Stars", which documents his work at the World Famous Gold & Silver Pawn Shop in Las Vegas, which he co-owns with his father, Rick Harrison, and grandfather, Richard Benjamin Harrison.
Document 7: Pawn Stars UK: Pawn Stars UK is a British reality television series which debuted on 26 August 2013 on the British version of the History channel. The series is filmed in Sealand, Flintshire in Wales, and chronicles the day-to-day activities of pawn shop Regal Pawn, collaboratively run by Mark Andrew Manning, Mark Lever Holland, Marco Peter Holland, Simon Penworth, and Vicki Manning.
Document 8: West Coast Customs: West Coast Customs (abbreviated by the company as WCC) is an automobile repair shop focusing on the customization of vehicles. It was started by co-founders Ryan Friedlinghaus and Quinton Dodson in 1994. According to Friedlinghaus, he began the business with a $5000 loan from his grandfather, but other sources claim that he raised the seed money for the business while working at his father's liquor store. Owing to the patronage of celebrities such as Shaquille O'Neal, and Sean Combs, along with appearances in the reality television programs "Pimp My Ride" and "Street Customs", the company has gained a high degree of notoriety and has become a multimillion-dollar business.
Document 9: Pawnography: Pawnography is an American game show broadcast by History. Hosted by comedian Christopher Titus and featuring "Pawn Stars" personalities Rick Harrison, Corey Harrison and Austin "Chumlee" Russell as panelists, the series features contestants answering questions for a chance to win cash and items for sale from the Gold and Silver Pawn Shop (where "Pawn Stars" is taped). The show premiered July 10, 2014, at 10 p.m. ET, following "Pawn Stars".
Document 10: Pawn Stars: Pawn Stars is an American reality television series, shown on History, and produced by Leftfield Pictures. The series is filmed in Las Vegas, Nevada, where it chronicles the daily activities at the World Famous Gold & Silver Pawn Shop, a 24-hour family business opened in 1989 and operated by patriarch Richard "Old Man" Harrison, his son Rick Harrison, Rick's son Corey "Big Hoss" Harrison, and Corey's childhood friend, Austin "Chumlee" Russell. The series, which became the network's highest rated show and the No. 2 reality show behind "Jersey Shore", debuted on July 26, 2009.
Document 11: Richard Benjamin Harrison: Richard Benjamin Harrison Jr., (also known by the nicknames The Old Man and The Appraiser) (born March 4, 1941), is a Las Vegas businessman and reality television personality, best known as the co-owner of the World Famous Gold & Silver Pawn Shop, as featured on the History channel series "Pawn Stars". Harrison was the co-owner of a pawn shop with his son Rick Harrison until he suffered a stroke, causing him to retire.They opened the store together in 1989.
Document 12: Kirk Kerkorian: Kerkor "Kirk" Kerkorian (June 6, 1917 – June 15, 2015) was an Armenian-American businessman, investor, and philanthropist. He was the president and CEO of Tracinda Corporation, his private holding company based in Beverly Hills, California. Kerkorian is known for having been one of the important figures in the shaping of Las Vegas and, with architect Martin Stern, Jr. described as the "father of the mega-resort". He built the world's largest hotel in Las Vegas three times: the International Hotel (opened in 1969), the MGM Grand Hotel (1973) and the MGM Grand (1993). He purchased the Metro-Goldwyn-Mayer movie studio in 1969.
Document 13: Michael Chu: Michael Chu is an American stock trader who earned a World Series of Poker bracelet in the 2007 $1,000 WSOP No Limit Hold'em with rebuys event (Event #8). Chu won the event with the minimum investment, having never made a single re-buy in the event. He has been playing poker for the past 10 years mostly with his high school and college friends, and credits the motion picture film "Rounders" as sparking his interest in Texas Hold 'Em.
Document 14: Chumlee: Austin Lee Russell (born September 8, 1982), better known by his stage name of Chumlee, is an American actor, businessman and reality television personality, known as a cast member on the History Channel television show "Pawn Stars", which depicts the daily business at the Gold and Silver Pawn Shop in Las Vegas where Russell works as an employee. Chumlee came to work at the pawn shop five years before filming of the first season, having been a childhood friend of Corey Harrison, whose father, Rick Harrison, and grandfather, Richard Benjamin Harrison, opened the shop in 1989.
Document 15: Rick Harrison: Richard Kevin "Rick the Spotter" Harrison (born March 22, 1965) is an American, Las Vegas-based businessman and reality television personality, best known as the co-owner of the World Famous Gold & Silver Pawn Shop, as featured on the History series "Pawn Stars". He co-owns the pawn shop with his father, Richard Benjamin Harrison, which they opened in 1989. Harrison dropped out of high school to pursue his "$2,000-a-week business of selling fake Gucci bags".
ground_truth: Richard Benjamin Harrison