Question: In what city was the wrestling promotion based in that was formed by John Benson Williams?

Context articles: Ian Rotten
Lutte Internationale
All Star Wrestling
International Wrestling Association (1970s)
Ultra Championship Wrestling-Zero
Independent Wrestling Association Mid-South
New Generation Wrestling
Combat Zone Wrestling roster
Global Force Wrestling
Consejo Mundial de Lucha Libre

John Benson Williams (born June 1, 1970) is an American professional wrestler better known by his ring name Ian Rotten.
 He has wrestled in Global Wrestling Federation (GWF), Extreme Championship Wrestling (ECW), and his former wrestling promotion .
Lutte Internationale (] , "International Wrestling") was a professional wrestling promotion based in Montreal from 1980 until 1987.
 The promotion was founded by Frank Valois, André the Giant and Gino Brito as Promotions Varoussac (VAlois, ROUSSimoff, and ACcocella Promotions).
 Lutte Internationale succeeded All-Star Wrestling and Grand Prix Wrestling as Quebec's top wrestling promotion for most of the 1980s.
All Star Wrestling is a British Professional wrestling promotion also known as All Star Promotions, Superslam Wrestling and Big Time Wrestling and originally known as Wrestling Enterprises (of Birkenhead), run by Brian Dixon and based in Liverpool, England.
 Dixon's promotion tours theatres, leisure centres, town halls and similar venues, many of them old venues for televised wrestling in the UK in the 1950-1980s, as well as holiday camps.
 It is the oldest active wrestling promotion in the UK, and furthermore the longest-running UK wrestling promotion ever - a record it has held since September 2013, when it eclipsed the 42 years and 11 months lifespan of Joint Promotions/Ring Wrestling Stars (March 1952– February 1995).
The International Wrestling Association (IWA) was a professional wrestling promotion based in Cleveland, Ohio in the 1970s.
 It was founded by Eddie Einhorn and Pedro Martinez in 1975.
 The company descended from the National Wrestling Federation.
 It was originally intended to be the first national wrestling promotion, but stayed primarily in the Mid-Atlantic region.
 Einhorn offered his wrestlers more money and benefits than competing promotions, helping to lure big names such as Mil Mascaras (the company's heavyweight champion).
 Einhorn left the promotion later that year, and Johnny Powers took over as booker.
 The company scaled down and stayed in Virginia and North Carolina.
 After losing an antitrust lawsuit against the rival Jim Crockett Promotions, the IWA closed in 1978.
Ultra Championship Wrestling-Zero (UCW-Zero, formerly known as American Professional Wrestling) is an American independent professional wrestling promotion based in Salt Lake City, Utah.
 Founded by promoter Steve Neilson in 2002, it is the only Utah-based wrestling promotion to promote events in the Rocky Mountains and Southwestern United States.
 One of its shows at the 2008 Festival Latinoamericano in Provo, Utah set an attendance record with over 1,000 people present at opening night.
Independent Wrestling Association (IWA) Mid-South (also known as IWA Mid-South, IWA-MS, and IWA Mid South Wrestling) is an American independent professional wrestling promotion based in Louisville, Kentucky.
 It was formed by Ian Rotten in 1996.
New Generation Wrestling (NGW) is a British professional wrestling promotion based in Hull, founded by Luke Ingamells in 2008 and currently owned and run by Richard Dunn.
 As in other wrestling promotions, NGW shows feature storyline-driven, scripted matches for entertainment purposes and not legitimate sporting contests.
 Initially a small regional company, NGW has gained critical acclaim for its strong characters, consistent storylines and family-friendly shows.
 Over the years, it has arguably become the top wrestling promotion in North England and one of the country's top providers of sports entertainment.
Combat Zone Wrestling (CZW) is a professional wrestling promotion based in Philadelphia, Pennsylvania, U.S. Employees in CZW consist of professional wrestlers (the ring name of the employees are written to the left, while the employee's real name is written to the right; employees without an alias, will only have their real name appearing), managers, play-by-play and color commentators, announcers, interviewers, referees, trainers, script writers, and various other positions.
 Executives and board of directors are also listed.
 This list is organized alphabetically by the wrestlers' real last names.
 This is a list of professional wrestlers who are Combat Zone Wrestling employees, and a list of former employees of the professional wrestling promotion Combat Zone Wrestling (CZW).
 In the early days of the company, talent often only appeared a couple of times before disappearing, or wrestlers accepted bookings with other companies, resulting in extended absences from CZW.
Impact Wrestling, also known as Global Force Wrestling (GFW), is an American professional wrestling promotion based in Nashville, Tennessee which operates as a subsidiary of Anthem Sports & Entertainment.
 Alongside rival Ring of Honor (ROH), GFW is viewed as the second-largest professional wrestling promotion in the United States after WWE.
Consejo Mundial de Lucha Libre Co., Ltd. (CMLL; ] , "World Wrestling Council") is a "lucha libre" professional wrestling promotion based in Mexico City.
 The promotion is also referred to by its previous name Empresa Mexicana de Lucha Libre (EMLL) ("Mexican Wrestling Enterprise").
 Founded in 1933, it is the oldest professional wrestling promotion still in existence.