Question: Which airport is closer to its central business district, Mercedita Airport or MidAmerica St. Louis Airport?

Context paragraphs:
St. Louis Downtown Airport: St. Louis Downtown Airport (IATA: CPS, ICAO: KCPS, FAA LID: CPS) is a public-use airport located in Greater St. Louis, one mile (2 km) east of the central business district of Cahokia, in St. Clair County, Illinois, United States.  It is owned by the Bi-State Development Agency.  The airport is located less than 3 miles from the Gateway Arch Riverfront and is used by many business aircraft visiting the St. Louis region.  Airport services include two full-service 24-hour fixed-base operators, an instrument landing system, an FAA air traffic control tower, and its own dedicated Index B aircraft rescue and firefighting (ARFF) service.

Mercedita Airport: Mercedita Airport (IATA: PSE, ICAO: TJPS, FAA LID: PSE) is a public use airport located three nautical miles (6 km) east of the central business district of Ponce, Puerto Rico.  The airport covers 270 "cuerdas" (approx. 262.2 acres) of land and has one runway.  It was inaugurated as an international airport on November 1, 1990.  Mercedita is Puerto Rico's largest airport in terms of military personnel volume and the second largest in terms of military freight.  The airport is certified under part 139 of the Federal Aviation Regulations.

1871 St. Louis tornado: The 1871 St. Louis tornado was an F3 tornado that touched down in St. Louis, Missouri on March 8, 1871, at 3:00pm.  It traveled east-northeast at 70 mph , cutting a swath up to 250 yd wide and 5 mi long into East St. Louis, Illinois.  The tornado was on the ground for 3 minutes.  Thirty homes were destroyed and 30 severely damaged.  Six railroad depots were destroyed with eight deaths in them.  One death occurred on a bridge.  Overall, 9 people were killed, 60 injured, and $1,500,000 damage occurred.  It is one of four tornadoes (1896, 1927, 1959) that have ripped through the central business district of St. Louis.

Berger-Kiel House: The Berger-Kiel House is a log house located at 931 N. 6th St. in Mascoutah, Illinois.  The house was built circa 1863-64 for German immigrant Jacob Berger and his family.  The log house was built in a traditional manner using dovetail notching and has a hall and parlor layout.  A wooden frame addition was placed on the house circa 1868-72.  Log houses such as this one were popular among low-income families as an inexpensive house type in wooded rural areas.  The Berger-Kiel House is one of the few log houses remaining in the Mascoutah area.  While it was originally located at 8910 Illinois Route 4, it was moved to its current site during the construction of MidAmerica St. Louis Airport.

Downtown St. Louis: Downtown St. Louis is the central business district of St. Louis, Missouri, the hub of tourism and entertainment, and the anchor of the St. Louis metropolitan area.  The downtown is bounded by Cole Street to the north, the river front to the east, Chouteau Avenue to the south, and Tucker Boulevard to the west.  (If the neighborhood defined by the city as Downtown West, St. Louis is included, however, then it extends further west to Jefferson Avenue.)  The downtown is the site of many corporate headquarters, including Stifel Financial Corp., HOK, Spire Inc., and a host of other companies.

MidAmerica St. Louis Airport: MidAmerica St. Louis Airport (IATA: BLV, ICAO: KBLV, FAA LID: BLV) is a public use airport co-located on the grounds of Scott Air Force Base.  It is located 14 nautical miles (16 mi, 26 km) east of the central business district of Belleville, in St. Clair County, Illinois, United States.

Spirit of St. Louis Airport: Spirit of St. Louis Airport (IATA: SUS, ICAO: KSUS, FAA LID: SUS) is a public airport located 17 miles (27 km) west of the central business district of St. Louis, in St. Louis County, Missouri, United States.  It is owned by St. Louis County and named after the famous "Spirit of St. Louis" aircraft.

Colorado Springs East Airport: Colorado Springs East Airport (FAA LID: CO49) is a private airport located 25 miles (40 km) east of the central business district of the city of Colorado Springs, and 3 miles (5 km) northwest of the central business district of the city of Ellicott in El Paso County, Colorado, United States.  The airport is privately owned by Springs East Airport, Inc.  The airport is 2 miles (3 km) north of Highway 94 via a gravel road, and taxiways and vehicle roadways are gravel/grass/dirt.

Stennis International Airport: Stennis International Airport (ICAO: KHSA, FAA LID: HSA) is a public use airport in Hancock County, Mississippi, United States.  Owned by the Hancock County Port and Harbor Commission, the airport is located eight nautical miles (15 km) northwest of the central business district of Bay St. Louis, Mississippi.  It is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a "general aviation" facility.

DeFuniak Springs Airport: DeFuniak Springs Airport (FAA LID: 54J) is a public-use airport located two nautical miles (3.7 km) west of the central business district of the city of DeFuniak Springs in Walton County, Florida, United States.  The airport is publicly owned and operated by the City of DeFuniak Springs and serves the general aviation transportation needs of the City and Walton County.  In addition to private and recreational flying, the airport also supports business and corporate aviation.  The airport is situated on 343 acres of land located approximately 2.5 miles west of the City's Central Business District.

Supporting paragraphs: Mercedita Airport MidAmerica St. Louis Airport
Answer: Mercedita Airport