Question:  Leonard S. Coleman Jr. is part of the board of directors of which parent company of a well-known racetrack in Louisville, Kentucky?

Context paragraphs:
Leonard S. Coleman Jr.: Leonard S. Coleman Jr. (born February 17, 1949) was the last president of the National League.  He held the office from 1994 until 1999 when it was eliminated by Major League Baseball.  He is currently on the Board of Directors of H. J. Heinz Company, the Omnicom Group, Cendant Corporation, Aramark, Churchill Downs and Electronic Arts.  He received a Master of Education from the Harvard Graduate School of Education and a Master of Public Administration from the John F. Kennedy School of Government at Harvard University.

SM-Chile: SM-Chile is a holding company for Banco de Chile.  Until 1996, when its Board of Shareholders agreed to become an investment company with exclusive turn, governed by Law No. 19,396, changing its name to Bank of Parent Company Chile SA' Simultaneously, the parent company of Banco de Chile SA created a commercial bank under the name Banco de Chile and was transferred all its assets and liabilities, excluding subordinated obligation call with the Central Bank of Chile, obligation undertaken following the banking crisis of the years 1982 - 1984 and the consequent bailout carried out by the Central Bank.  After this transformation, the sole shareholder of Banco de Chile was the parent company of Banco de Chile SA

Robert Milton: Robert A. Milton is the Chairman of the Board of Directors of United Continental Holdings which is the parent company of United Airlines.  He also serves as the Lead Independent Director of Air Lease Corporation.  He was the Chairman, President and Chief Executive Officer of ACE Aviation Holdings Inc., the parent company of Air Canada, from 2004 to 2017.  He is also a former Chairman, President and CEO of Air Canada.

Churchill Downs: Churchill Downs, located on Central Avenue in south Louisville, Kentucky, United States, is a Thoroughbred racetrack most famous for annually hosting the Kentucky Derby.  It officially opened in 1875, and held the first Kentucky Derby and the first Kentucky Oaks in the same year.  Churchill Downs has also hosted the renowned Breeders' Cup on eight occasions, most recently in 2011.  It is next scheduled to host the Breeders' Cup in 2018.  Churchill Downs Incorporated owns and operates the racetrack.  With the infield open for the Kentucky Derby, the capacity of Churchill Downs is roughly 170,000.

B. J. Coleman: Bryon Elwyn "BJ" Coleman Jr. (born September 16, 1988) is an American football quarterback who is currently a free agent.  He played college football at the University of Tennessee at Chattanooga after transferring there from Tennessee, and high school football at The McCallie School.  He was selected by the Green Bay Packers in the 7th round of the 2012 NFL Draft, 243rd overall.  Coleman signed with the Saskatchewan Roughriders of the Canadian Football League (CFL) on January 25, 2016.

William Thaddeus Coleman Jr.: William Thaddeus "Bill" Coleman Jr. (July 7, 1920 – March 31, 2017) was an American attorney and politician.  Coleman was the fourth United States Secretary of Transportation, from March 7, 1975, to January 20, 1977, and the second African American to serve in the United States Cabinet.  As an attorney, Coleman played a major role in significant civil rights cases.  At the time of his death, Coleman was the oldest living former Cabinet member.

HNA Infrastructure Investment Group: Hainan HNA Infrastructure Investment Group Co., Ltd. formerly Hainan Island Construction Co., Ltd. is a Chinese listed company based in Haikou.  in mid-2016 the company acquired HNA Infrastructure Group () in a reverse IPO from intermediate parent company HNA Infrastructure Holding Group (), which HNA Infrastructure Group is the parent company of HNA Real Estate and HNA Airport Group (, in turn HNA Airport Group is the parent company of HNA Airport Holdings (Group) () and HNA Airport Holdings is the parent company of Sanya Phoenix International Airport Co., Ltd.); HNA Airport Group is the largest shareholder of Haikou Meilan International Airport (19.58% as at October 2016), which in turn the largest shareholder of Hong Kong listed company HNA Infrastructure.  In December 2016 a proposed capital increase of the HK-listed company was announced.  HNA Infrastructure Investment Group would purchase a minority share directly.  Haikou Meilan International Airport was the second-largest shareholder of Hainan Airlines; Hainan Airlines, however, also owned a minority stake in Haikou Meilan International Airport.

Churchill Downs Incorporated: Churchill Downs Incorporated is the parent company of Churchill Downs.  The company has evolved from one racetrack in Louisville, Kentucky to a multi US-state, publicly traded company with racetracks, casinos and the United States' leading online wagering company among its growing portfolio of successful businesses.

Cecil Coleman: Cecil Noble Coleman Jr. (April 12, 1924 – February 27, 1988) was an American football player, coach, and college athletics administrator.  He served as the head football coach at Fresno State College—now known as California State University, Fresno—from 1959 to 1963, compiling a record of 37–13.  Coleman was the athletic director at Fresno State from 1963 to 1971, at Wichita State University from 1971 to 1972, and at the University of Illinois at Urbana–Champaign from 1972 to 1979.

Parent company: A parent company is a company that owns enough voting stock in another firm to control management and operation by doing and influencing or electing its board of directors.  The second company is deemed a subsidiary of the parent company.

Supporting paragraphs: Leonard S. Coleman Jr. Churchill Downs Incorporated
Answer: Churchill Downs Incorporated