Question: Brian William Koppelman was the director for films including "Solitary Man" and the documentary "This Is What They Want" for ESPN, a joint venture between the Hearst Corporation and what company?

Context paragraphs:
ESPN 3D: ESPN 3D was an American digital cable and satellite television channel that was owned by ESPN Inc., a joint venture between The Walt Disney Company (which operates the network, through its 80% controlling ownership interest) and the Hearst Corporation (which holds the remaining 20% interest).  The channel featured 3D telecasts of sports events that ESPN held broadcast rights, and simulcasted live games from other ESPN networks on a semi-regular basis.

ESPN Deportes: ESPN Deportes (] , "ESPN Sports") is an American Spanish language digital cable and satellite sports television channel that is owned by ESPN Inc., a joint venture between the Disney–ABC Television Group division of The Walt Disney Company (which owns a controlling 80% stake) and the Hearst Corporation (which owns the remaining 20%).  The network is aimed primarily at Hispanic population in the United States.  The channel broadcasts from studio facilities at ESPN's traditional bases of operations in Los Angeles, Coral Gables, Florida and Bristol, Connecticut, along with their Mexican base in Mexico City.

ESPN Classic: ESPN Classic is an American digital cable and satellite television network that is owned by ESPN Inc., a joint venture between The Walt Disney Company (which owns a controlling 80% stake) and Hearst Corporation (which owns 20%).  The channel features rebroadcasts of famous sporting events, sports documentaries and sports-themed movies.  Such programs include biographies of famous sports figures or a rerun of a marquee World Series or Super Bowl game, often with added commentary on the event.

WatchESPN: WatchESPN (formerly ESPN Networks) is an Internet television website and mobile application operated by ESPN Inc., a joint venture between The Walt Disney Company (which operates the network, through its 80% controlling ownership interest) and the Hearst Corporation (which holds the remaining 20% interest).

ESPNU: ESPNU is an American digital cable and satellite sports television channel that is owned by ESPN Inc., a joint venture between the Disney–ABC Television Group division of The Walt Disney Company (which owns a controlling 80% stake) and the Hearst Corporation (which owns the remaining 20%).  The channel is primarily dedicated to coverage of college athletics, and is also used as an additional outlet for general ESPN programming.  ESPNU is based alongside its sister networks at ESPN's headquarters in Bristol, Connecticut.

ESPN Events: ESPN Events is an American sporting event planning division that is owned by ESPN Inc. ESPN Inc. is a joint venture between the Disney–ABC Television Group division of The Walt Disney Company (which owns a controlling 80% stake) and the Hearst Corporation (which owns the remaining 20%).  ESPN Events is headquartered in Charlotte, North Carolina, and shares its operations with SEC Network and formerly with ESPNU.  The corporation organizes sporting events for broadcast across the ESPN family of networks, including, most prominently, a group of college football bowl games and in-season college basketball tournaments.

Star Sports Network: Star Sports Network (previously known as ESPN STAR Sports or ESS) is a leading sports broadcasting network in India,owned by 21st Century Fox through its subsidiaries STAR TV and Fox Networks Group.  It was formed as ESPN STAR Sports, a joint venture between ESPN Inc. (jointly owned by The Walt Disney Company and Hearst Corporation, and through ESPN International, which it directly owns,) and News Corporation in 1994.  News Corporation acquired Disney's stake in the company in 2012 and Manu Sawhney was replaced by Peter Hutton as the CEO.

ESPN Films: ESPN Films (formerly known as ESPN Original Entertainment) is a production company which produces and distributes sports films and documentaries.  It is owned by ESPN Inc., a joint venture between the Disney–ABC Television Group division of The Walt Disney Company (which owns a controlling 80% stake) and the Hearst Corporation (which owns the remaining 20%).

Brian Koppelman: Brian William Koppelman (born in 1966) is an American filmmaker, essayist, podcaster, TV series creator, former music business executive and record producer.  Koppelman is the co-writer of "Ocean's Thirteen" and "Rounders", the producer for films including "The Illusionist" and "The Lucky Ones", the director for films including "Solitary Man" and the documentary "This Is What They Want" for ESPN as part of their "30 for 30" series, and the co-creator, showrunner, and executive producer of Showtime's "Billions".

ESPN: ESPN (originally an acronym for Entertainment and Sports Programming Network) is a U.S.-based global cable and satellite sports television channel owned by ESPN Inc., a joint venture between The Walt Disney Company (which operates the network) and the Hearst Corporation (which owns a 20% minority share) The company was founded in 1979 by Bill Rasmussen along with his brother Scott and Ed Egan.

Supporting paragraphs: Brian Koppelman ESPN
Answer: The Walt Disney Company