Question: In which city is based the Adelson Foundation, a private charitable foundation founded by the business magnate and philanthropist who also owns the Marina Bay Sands in Singapore?

Context paragraphs:
The Sail @ Marina Bay: The Sail @ Marina Bay (Chinese: 滨海舫) is a waterfront lifestyle condominium located in the Marina Bay area in Singapore.  It was completed in 2008.  The first tenants have moved into Central Park Tower in July 2008.  Residents moved into Marina Bay Tower a few weeks later.  The structure of The Sail is 245 m with 70 storeys and is one of Singapore's tallest condominium/apartment.  This development offers panoramic city view of Marina Bay and the sea.  It is close to some of Singapore's famous landmarks such as Suntec City, Marina Bay Sands, Esplanade, Telok Ayer Market and the Singapore River.  The Downtown MRT Station is built a few meters to the West of the building.  The building was erected on reclaimed land, and the Central Linear Park is built on the South Side next to the building.

Bayfront MRT Station: Bayfront MRT Station (CE1/DT16) is an underground Mass Rapid Transit interchange station on the Circle Line and the Downtown Line in Downtown Core, Singapore, next to the Marina Bay.  The station connects the Circle Line and Downtown Line via a cross-platform interchange, making it the only MRT station in Singapore to provide cross-platform interchange between two MRT lines operated by two different operators.  Serving mainly the Marina Bay Sands hotel and casino, an underground walkway also provides visitors with a convenient passage to Gardens by the Bay.  This station is one of five MRT stations that has a cross platform interchange.

Lee Foundation: Lee Foundation is Singapore's Largest Private Charitable foundation, created to aid "the advancement of education, medicine and helping the poor; and assisting victims of fire, flood and famine", It also funded other philanthropic work.  It was founded in 1952 by philanthropist and businessman, Lee Kong Chian.  It is run by a board comprising his descendants and non-family members, board members include his eldest son Lee Seng Gee (Chairman of Lee foundation and Lee Group of Companies), Lee Seng Tee (well respected philanthropist) Lee Seng Wee (former Chairman of OCBC), Lee Han Shih (notably outspoke former journalist for the Business Times), and Lee Shih Hua, Alan.

Sheldon Adelson: Sheldon Gary Adelson (pronounced ; born August 4, 1933) is an American business magnate, investor, and philanthropist.  He is the founder, chairman and chief executive officer of Las Vegas Sands Corporation, which owns the Marina Bay Sands in Singapore, and is the parent company of Venetian Macao Limited, which operates The Venetian Resort Hotel Casino and the Sands Expo and Convention Center.  He also owns the Israeli daily newspaper "Israel Hayom", and the "Las Vegas Review-Journal".  Adelson, a lifelong donor and philanthropist to a variety of causes, founded with his wife's initiative the Adelson Foundation.  He is a member of the Republican Party.

PAP Community Foundation: PAP Community Foundation (PCF) is a charitable foundation founded by the Singapore People's Action Party (PAP) in 1986.  Their job includes the social and charitable causes of Singapore and PAP, especially education.  Their work also includes the offering of financial assistance and the promotion of resident and citizen welfare.  The Foundation has built many kindergartens and centres islandwide, which provide kindergarten, childcare, student care and aged care services.  Centres were also built close the Housing Development Board heartlands, such that the centres are a stone's throw from home.

Pechet Foundation: The Pechet Foundation is an American private charitable foundation founded by Maurice Pechet.  The organization is based in Dover, Massachusetts.

Cultural Initiatives Foundation: The Cultural Initiatives Foundation (The Mikhail Prokhorov Foundation) is a private charitable foundation founded in 2004 by Mikhail Prokhorov.

Adelson Foundation: The Adelson Foundation is an American private charitable foundation founded by business magnate Sheldon Adelson and his wife Miriam.  The organization is based in Los Angeles.

Marina Bay Sands observation deck: Marina Bay Sands has an observation deck offering panoramic views of the Singapore Central Business District skyline.  It is located on Level 4 of the outdoor walkway beside Marina Bay Sands Expo and Convention Centre.

Helix Bridge: The Helix Bridge, officially The Helix, and previously known as the Double Helix Bridge, is a pedestrian bridge linking Marina Centre with Marina South in the Marina Bay area in Singapore.  It was officially opened on 24 April 2010 at 9 pm; however, only half was opened due to ongoing construction at the Marina Bay Sands.  It is located beside the Benjamin Sheares Bridge and is accompanied by a vehicular bridge, known as the Bayfront Bridge.  The entire bridge was opened on 18 July 2010 to complete the entire walkway around Marina Bay.

Supporting paragraphs: Adelson Foundation Sheldon Adelson
Answer: Los Angeles