Question: where is the corporation based that Georgia-Pacific is now a subsidiary of?

Context paragraphs:
Fallen Leaf Lake (Washington): Fallen Leaf Lake, once called Dead Lake, is a lake in Camas, Washington.  Once home to Dead Lake Cemetery, it and the area surrounding are now fenced off to the public.  This property had been owned by the local Camas paper mill for decades.  Currently, the mill is owned by the Georgia-Pacific Corporation, a subsidiary of Koch Industries, Inc.  In 2011, the property surrounding Fallen Leaf Lake was purchased from Koch RP Holdings I, LLC by the City of Camas, Washington for use as a city park.

FNB Corporation: F.N.B. Corporation is a financial services corporation based in Pittsburgh, Pennsylvania, and the holding company for its largest subsidiary, First National Bank.  As of July 20, 2017, FNB has total assets of $31 billion.  There are more than 400 First National Bank offices in Pennsylvania, Ohio, Maryland, West Virginia, North Carolina and South Carolina.  The company has more than 4,800 employees.

Kodenshi AUK Group: Kodenshi AUK Group is a conglomerate of two companies, Kodenshi Corporation based in Kyoto, Japan and AUK Corporation based in Iksan, South Korea.

Owen Robertson Cheatham: Owen Robertson Cheatham (1902-1970) was an American businessman.  He founded Georgia-Pacific, a formerly publicly traded corporation on the New York Stock Exchange from 1949 to 2005, now a subsidiary of Koch Industries.

Koch Industries: Koch Industries, Inc. is an American multinational corporation based in Wichita, Kansas, United States, with subsidiaries involved in manufacturing, trading, and investments.  It was founded as Wood River Oil and Refining Company in 1940, and later as Rock Island Oil & Refining Company.

Avenida de Colores, Inc.: Avenida de Colores, Inc. was founded in 2010 by Denise Kowal as a 501(c)(3) nonprofit corporation based in Sarasota, Florida in the United States.  The corporation is organized for the purpose of providing students with experiences and instruction in the visual and performing arts and to enrich communities with cultural events.  The corporation produces the Sarasota Chalk Festival, a cultural event that celebrates the sixteenth century performance art of Italian street painting.  The corporation functions solely on donations from patrons, sponsorships, and grants and it is a fully volunteer organization.

21st Century Fox: Twenty-First Century Fox Inc. (stylized as 21st Century Fox, simply known as Fox, and also called 21CF) is an American multinational mass media corporation based in Midtown Manhattan, New York City.  It was one of two companies formed from the 2013 spin-off of the publishing assets of News Corporation, as founded by Rupert Murdoch in 1979.  21st Century Fox is the legal successor to News Corporation dealing primarily in the film and television industries and is currently the world's fourth largest media conglomerate (after Comcast, The Walt Disney Company and Time Warner).  The other company, the "new" News Corporation, holds Murdoch's print interests (both owned by him and his family via a family trust with 39 percent controlling interest in each).

Wisconsin Physicians Service: Wisconsin Physicians Service Insurance Corporation (WPS Health Solutions) is a not-for-profit service insurance corporation based in Madison, Wisconsin.  WPS offers health insurance plans for groups and individuals and benefit plan administration for businesses.  WPS also provides insurance claims processing services under various U.S. government contracts and has a subsidiary corporation, EPIC Specialty Benefits, offering dental and other nonmedical benefits.

Crown Zellerbach: Crown Zellerbach was an American pulp and paper conglomerate based in San Francisco, California.  It was purchased in a hostile takeover in 1985.  The pulp and paper assets were sold to James River Corporation and are now part of Georgia-Pacific.  Its name lives on most notably through the Crown Zellerbach Building in San Francisco (One Bush Plaza) and various philanthropic projects of the Zellerbach family.  The company invented folded paper towels, cardboard egg cartons, and the window envelope.

CNA Financial: CNA Financial Corporation is a financial corporation based in Chicago, Illinois, United States, and noted for its 600 ft tall red headquarters building, CNA Center.  Its principal subsidiary, Continental Casualty Company (CCC), was founded in 1897.  CNA (the parent company) was incorporated in 1967.

Supporting paragraphs: Owen Robertson Cheatham Koch Industries
Answer: Wichita, Kansas, United States