Question: China General Aviation was acquired in 1997 by a company headquartered in which airport ?

Context paragraphs:
New Richmond Regional Airport: New Richmond Regional Airport (ICAO: KRNH, FAA LID: RNH) is an active general aviation airport located in the city of New Richmond, Wisconsin, United States.  The airport is owned and operated by the City of New Richmond.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a local general aviation facility.  The State of Wisconsin classifies the airport as a Corporate/Transport airport.

Reno Stead Airport: Reno/Stead Airport (ICAO: KRTS) is a large public and military general aviation airport located in the North Valleys area, 10 nautical miles (19 km) northwest of the central business district of Reno, in Washoe County, Nevada, United States.  A former military installation until 1966, when it was known as Stead Air Force Base, the airport's sole remaining military presence consists of an Army Aviation Support Facility and the 189th General Support Aviation Battalion of the Nevada Army National Guard, flying CH-47 Chinook helicopters.  The airport is owned by the Reno Tahoe Airport Authority.  The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a general aviation "reliever airport".

Fremont Municipal Airport (Michigan): Fremont Municipal Airport (ICAO: KFFX) is a city-owned public-use airport located three nautical miles (6 km) southwest of the central business district of Fremont, a city in Newaygo County, Michigan, United States.  The airport in uncontrolled, and is used for general aviation purposes.  Additionally, skydiving and ultralight activity is conducted at the field.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a local general aviation facility.

China General Aviation: China General Aviation (Corporation - CGAC) was an airline based in Xi'an, China.  It operated a fleet of 12 Yakovlev Yak-42D and later a few Boeing 737-300 aircraft.  It was acquired by China Eastern Airlines in 1997.

Bishop International Airport: Bishop International Airport (IATA: FNT, ICAO: KFNT, FAA LID: FNT) is a commercial and general aviation airport located in Flint, Michigan.  It is named after banker and General Motors board member Arthur Giles Bishop (April 12, 1851 – January 22, 1944), who donated 220 acres of his farmland for the airport in 1928.  The third busiest airport in Michigan, it surpassed competitor MBS International Airport in terms of airline operations in 2002.  In 2007, 1,071,238 passengers used Bishop International Airport; in 2011, 938,914 passengers used the airport.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a small hub primary commercial service facility.  The airport is currently served by several passenger airlines: Allegiant Air, Southwest Airlines and Delta Air Lines operate mainline service out of the airport, as well as affiliates of Delta Connection, United Express and American Eagle.  Additionally, FedEx Express and a FedEx Feeder affiliate operate cargo services out of the airport.  Accompanying the airlines is fixed-base operator Av Flight that handles both general aviation and airline operations and the flight school American Wings Aviation.  Bishop International Airport is in southwestern Flint, and is surrounded by Flint Township to the north, east and west; and Mundy Township to the south.

Meriden Markham Municipal Airport: Meriden Markham Municipal Airport (ICAO: KMMK, FAA LID: MMK) is a public-use airport located three miles (5 km) southwest of the central business district of Meriden, a city in New Haven County, Connecticut, United States.  This general aviation airport is owned by City of Meriden.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a local general aviation facility.

Miami-Dade Aviation Department: The Miami-Dade Aviation Department (MDAD) is an agency of the Miami-Dade County government that manages airports.  As of 2013 Emilio T. Gonzalez is the director of the agency.  It operates Miami International Airport, a passenger airport, and four general aviation airports.  The other airports are Miami-Opa Locka Executive Airport, Miami Executive Airport, Miami Homestead General Aviation Airport, and Dade-Collier Training and Transition Airport.  The executive offices are located at Miami International Airport.

China Eastern Airlines: China Eastern Airlines Corporation Limited (, colloquially known as 东航/東航) is an airline headquartered in the China Eastern Airlines Building, on the grounds of Shanghai Hongqiao International Airport in Changning District, Shanghai, China.  It is a major Chinese airline operating international, domestic and regional routes.  Its main hubs are at Shanghai Pudong International Airport and Shanghai Hongqiao International Airport, with secondary hubs at Beijing Capital International Airport, Kunming Changshui International Airport and Xi'an Xianyang International Airport.

Quonset State Airport: Quonset State Airport (IATA: NCO, ICAO: KOQU, FAA LID: OQU) is a joint civil-military public airport located on Quonset Point, in northeastern North Kingstown, Rhode Island, adjacent to Narragansett Bay.  It is a general aviation airport and there is no scheduled airline service available.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a regional general aviation facility.

China General Aviation Flight 7552: China General Aviation Flight 7552 was a China General Aviation flight from Nanjing Dajiaochang Airport to Xiamen Gaoqi International Airport.  On July 31, 1992, the Yakovlev 42D on the route crashed into a pond past the runway after taking off.  8 of the 10 crew members and 100 of the 116 passengers died.

Supporting paragraphs: China General Aviation China Eastern Airlines
Answer: Shanghai Hongqiao International Airport