Question: Charles Watson ran a company that was similar to which Texas-based rival?

full_context: Document 1: Enron scandal: The Enron scandal, publicized in October 2001, eventually led to the bankruptcy of the Enron Corporation, an American energy company based in Houston, Texas, and the "de facto" dissolution of Arthur Andersen, which was one of the five largest audit and accountancy partnerships in the world. In addition to being the largest bankruptcy reorganization in American history at that time, Enron was cited as the biggest audit failure.
Document 2: Houston Natural Gas: Houston Natural Gas Company (HNG) was a gas utility headquartered in Houston, Texas. The company was acquired by InterNorth Inc. in 1985, with HNG executives taking top positions at InterNorth. Following the transaction, InterNorth was renamed Enron Corporation, and the company headquarters was moved from InterNorth's base in Omaha to the former HNG offices in Houston. The company is notable for former CEO Kenneth Lay who became CEO of the newly formed Enron.
Document 3: Reliance Natural Resources Limited: Reliance Natural Resources Limited is an Indian energy company involved in sourcing, supply and transportation of gas, coal and liquid fuels. The company was incorporated on 24 March 2000 and went public on 25 July 2005. It is a part of the Reliance Anil Dhirubhai Ambani Group. Reliance Natural Resources has merged with Reliance Power.
Document 4: Thomas W. Watson: Thomas Watson is a co-founder and former Vice Chairman of the Omnicom Group, Inc. and consults for Omnicom on management education and leadership development as Dean Emeritus of Omnicom University, Residency and Diversity programs.
Document 5: InterNorth: InterNorth Inc. was a large energy company headquartered in Omaha, Nebraska, in the United States, specializing in natural gas pipelines but also a force in the plastics industry, coal and petroleum exploration and production. They operated the largest natural gas pipeline in North America (approximately 36,000 miles of pipeline) formed in 1979 as a holding company for Northern Natural Gas Company (founded in 1931), Northern Liquid Fuels Company, Northern Petrochemicals Company, Northern Propane Gas Company, Northern Border Pipeline Company, and People's Natural Gas. InterNorth was briefly renamed HNG/Internorth in 1985, following its takeover of Houston Natural Gas Company. It was renamed Enteron briefly, before the naming people discovered there was a conflict. The name was changed to Enron Corporation just six months later.
Document 6: Exelon: Exelon Corporation is an American Fortune 100 energy company headquartered in Chicago, Illinois. It generates revenues of approximately $34.5 billion and employs approximately 34,000 people. Exelon is the largest electric holding company in the United States by revenue, the largest regulated utility in the United States with approximately 10 million customers, and is also the largest operator of nuclear power plants in the United States. It was created in October 2000 by the merger of PECO Energy Company and Unicom, of Philadelphia and Chicago respectively. Unicom owned Commonwealth Edison. Exelon operates regulated utilities in Illinois, Pennsylvania, Maryland, Delaware, New Jersey, and Washington, DC. In October 2009, Exelon had full or majority ownership of 17 nuclear reactors in 10 nuclear power plants. Exelon has operations and business activities in 47 states, the District of Columbia and Canada and is the largest competitive U.S. power generator with approximately 35,000 megawatts of owned capacity. Exelon merged with Constellation Energy Group in March 2012 and acquired Pepco Holdings in March 2016. Exelon consists of eight main operating subsidiaries with Exelon Generation, a deregulated energy generator, Constellation, a deregulated competitive energy supplier, and six regulated utilities, Commonwealth Edison (Illinois), Philadelphia Electric Company (Pennsylvania), Baltimore Gas and Electric (Maryland), Delmarva Power & Light (Delaware and Maryland), Atlantic City Electric (New Jersey), and Potomac Electric Power Company (Washington, DC and Maryland).
Document 7: Matt Watson (entrepreneur): Matthew Allan Watson (born in July 7, 1981 in Oklahoma City) also known as Matt Watson, is an American entrepreneur and the current CEO of Stackify LLC, a technology company based in Leawood, Kansas. In 2003, Watson co-founded and served as CTO of VinSolutions, a developer of online CRM and lead management software for auto dealerships. In 2011, VinSolutions was sold for $135 million to AutoTrader.com. Then Watson founded Stackify in January 2012 to assist software developers in troubleshooting and support with a suite of tools including Prefix and Retrace. Watson has credited his experience at VinSolutions for the skills necessary to build Stackify. During the same period, he also launched the Watson Technology Group to support other entrepreneurs via angel investing. Watson received a Bachelor of science degree in computer information systems at DeVry University in 2009.
Document 8: National Gas Company of Trinidad and Tobago: The National Gas Company of Trinidad and Tobago Limited (NGC) is a state-owned natural gas company. It was created by the Government of Trinidad and Tobago in 1975. NGC is operating in the field of gas pipelines, industrial sites, gas production, port and marine infrastructure, natural gas liquids and liquefied natural gas. It has assets worth $7 billion. Its credit rating by Moody's is Baa2 and A- from S&P The company currently operates in Point Lisas, Couva at the Point Lisas Industrial Estate.
Document 9: Enron: Enron Corporation was an American energy, commodities, and services company based in Houston, Texas. It was founded in 1985 as the result of a merger between Houston Natural Gas and InterNorth, both relatively small regional companies. Before its bankruptcy on December 2, 2001, Enron employed approximately 20,000 staff and was one of the world's major electricity, natural gas, communications and pulp and paper companies, with claimed revenues of nearly $101 billion during 2000. "Fortune" named Enron "America's Most Innovative Company" for six consecutive years.
Document 10: Chesapeake Energy: Chesapeake Energy Corporation is an American petroleum and natural gas exploration and production company headquartered in Oklahoma City, Oklahoma. The company was founded in 1989 by Aubrey McClendon and Tom L. Ward with only a $50,000 initial investment. McClendon named the company due to his love of the Chesapeake Bay region. Ward later left the company to found SandRidge Energy.
Document 11: Energy Future Holdings: Energy Future Holdings Corporation is an electric utility company headquartered in Energy Plaza in Downtown Dallas, Texas, United States. From 1998 to 2007, the company was known as TXU Corporation until its $45 billion leveraged buyout by Kohlberg Kravis Roberts, Texas Pacific Group and Goldman Sachs Capital Partners. That purchase was the largest leveraged buyout in history. s of February 2013 , the company has been described as "struggling" which resulted in the April 29, 2014 filing for bankruptcy protection under Title 11 of the United States Bankruptcy Code.
Document 12: Charles Watson (businessman): Charles "Chuck" Watson is the founder of The Natural Gas Clearinghouse. Later renamed Dynegy, the firm was a highly diverse energy trading company that was similar to rival Enron in many respects. Watson attempted to orchestrate a buyout of Enron in late 2001, but withdrew following the restating of Enron's financials. At one time this was the 11th to the largest corporation on the Fortune 500.
Document 13: Mercuria Energy Group: Mercuria Energy Group Ltd is a privately held Swiss international commodity trading company active over a wide spectrum of global energy markets including crude oil and refined petroleum products, natural gas (including LNG), power, coal, biodiesel, carbon emissions, base metals and agricultural products. In 2014, the company bought the commodities trading arm of J.P. Morgan in a reported US$800 million deal.
Document 14: Charles Dunstone: Sir Charles William Dunstone, CVO (born 21 November 1964) is the co-founder and former chairman of mobile phone retailer Carphone Warehouse, former chairman of multinational electrical and telecommunications retailer and services company Dixons Carphone (formed on 7 August 2014 by the merger of Dixons Retail and Carphone Warehouse), and executive chairman of the TalkTalk Group.
Document 15: Prisma Energy International: Prisma Energy International Inc., was a former subsidiary of Enron Corporation, formed in 2003 to own and manage the majority of Enron's overseas assets, formerly known as "Enron International". Prior to its official organization, Prisma was referred to within Enron as "InternationalCo". Enron's original bankruptcy reorganization plan, presented in early 2002, would have created a company broadly similar to Prisma (known under the working name "OpCo Energy"), but including Portland General Electric and the energy trading business, both later divested separately. As one of the final steps in Enron's liquidation, following their 2001 bankruptcy, Prisma was sold to Ashmore Energy International Ltd., a unit of Ashmore Group Plc., in 2006. Prisma was structured as an 'offshore' United States corporation incorporated in the British Overseas Territory of the Cayman Islands, but with its headquarters in Houston, Texas. It served as a holding company for 15 gas and electricity businesses. Its subsidiary, Prisma Energy International Services LLC, employed approximately 125 individuals, most at its headquarters in Houston, Texas. Assets in which Prisma Energy managed an interest employed an additional 6,500 employees worldwide. Following its 2006 sale to Ashmore Energy International Limited, Prisma Energy International Inc. was merged/amalgamated with Ashmore Energy International Limited with Prisma Energy being the survivor company. In December 2006, Prisma Energy International Inc. changed its name to Ashmore Energy International and, subsequently, in May 2007 to AEI.
ground_truth: Enron