Question: Which airport, Idaho Falls Regional Airport or Mercedita Airport, is located in Puerto Rico?

Context paragraphs:
Puerto Rico Firefighters Corps: The Puerto Rico Firefighters Corps —Spanish: "Cuerpo de Bomberos de Puerto Rico" (CBPR)— is the statewide fire department that provides fire protection, rescue, and protection from other hazards in Puerto Rico.  It was established in 1942 under the Puerto Rico Fire Services.  In addition, it offers fire protection services to all the airports under the authority of the Puerto Rico Ports Authority, including the Luis Muñoz Marin International Airport, Rafael Hernández Airport, and Mercedita Airport and they serve as crash rescue divisions.  A separate agency, the Puerto Rico Medical Emergency Corps, provides emergency medical services to all Puerto Rico.

Prinair Flight 191: Prinair Flight 191 was a Prinair (Puerto Rico International Airlines) flight from Luis Muñoz Marín International Airport in San Juan, Puerto Rico, to Mercedita Airport in Ponce, Puerto Rico.  At approximately 11:15pm on 24 June 1972, the aircraft crashed while attempting to land at Mercedita Airport.  Five people died in the accident.  and the remaining people were injured.

Museo Castillo Serrallés: Museo Castillo Serrallés (English: "Serrallés Castle Museum") is a museum in the city of Ponce, Puerto Rico, that showcases the history of sugar cane and rum industries and its impact in the economy of Puerto Rico.  The most notorious feature of the museum is the building it sits on.  The building is a large four-story structure built in the 1930s for the owner of Ponce's Destileria Serralles, one of Puerto Rico's largest rum destilleries.  They also owned one-time home to Puerto Rico's largest sugar-factory called Central Mercedita, producers of the "Snow White" sugar brand.  The building, known as Castillo Serrallés, was designed by Pedro Adolfo de Castro in 1930 in the Spanish Colonial Revival style.

Puerto Rico Tip-Off: The Puerto Rico Tip-Off is an ESPN Regional Television owned and operated preseason college basketball tournament that takes place in late November of each year, usually the week before Thanksgiving.  The 2016 tournament took place at HP Field House in Orlando, Florida due to Zika virus outbreak in Puerto Rico.  It takes place in Roberto Clemente Coliseum in San Juan, Puerto Rico.  Previously the event was held in Bayamón, Puerto Rico at Coliseo Rubén Rodríguez and San Juan, Puerto Rico at the Coliseo de Puerto Rico.  The tournament was started in 2007.

Sioux Falls Regional Airport: Sioux Falls Regional Airport (IATA: FSD, ICAO: KFSD, FAA LID: FSD) , also known as Joe Foss Field, is a public and military use airport owned by the Sioux Falls Regional Airport Authority and located three nautical miles (6 km) northwest of the central business district of Sioux Falls, a city in Minnehaha County, South Dakota, United States.  Named in honor of aviator Joe Foss, it serves the greater Sioux Falls area, as well as communities throughout eastern South Dakota, southwestern Minnesota and northwestern Iowa.

Idaho Falls Regional Airport: Idaho Falls Regional Airport (IATA: KIDA, ICAO: IDA) is a city owned, public use airport located two nautical miles (4 km) northwest of the central business district of Idaho Falls, a city in Bonneville County, Idaho, United States.  It was formerly known as Fanning Field.  It is the second-busiest airport in Idaho after Boise Airport.

Thief River Falls Regional Airport: Thief River Falls Regional Airport (IATA: TVF, ICAO: KTVF, FAA LID: TVF) is a public use airport located three nautical miles (6 km) south of the central business district of Thief River Falls, a city in Pennington County, Minnesota, United States.  The airport is owned by the Thief River Falls Regional Airport Authority.  It is mostly used for general aviation but is also served by one commercial airline subsidized by the Essential Air Service program.

Boise Airport: Boise Airport (IATA: BOI, ICAO: KBOI, FAA LID: BOI) (Boise Air Terminal or Gowen Field) is a joint civil-military airport three miles south of Boise in Ada County, Idaho, United States.  The airport is operated by the city of Boise Department of Aviation and is overseen by an Airport Commission.  It is by far the busiest airport in the state of Idaho, serving more passengers than all other Idaho airports combined and roughly ten times as many passengers as Idaho's second busiest airport, Idaho Falls Regional Airport.

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.

Rafael Hernández Airport: Rafael Hernández Airport (IATA: BQN, ICAO: TJBQ, FAA LID: BQN) is a joint civil-military airport located in Aguadilla, Puerto Rico.  It is named after the Puerto Rican composer Rafael Hernández Marín and is the second largest international airport in Puerto Rico in the region of Porta del Sol, Puerto Rico's west coast.  It is also home to Coast Guard Air Station Borinquen.  Rafael Hernandez Airport mainly serves Puerto Rican westerners living in the Eastern Region of the United States.  The airport previously served as a focus city for PAWA Dominicana.

Supporting paragraphs: Idaho Falls Regional Airport Mercedita Airport
Answer: Mercedita Airport