Title: San Juan, Puerto Rico
Content:  San Juan (, ; "Saint John") is the capital city and most-populous municipality in the Commonwealth of Puerto Rico, an unincorporated territory of the United States. As of the 2010 census, it is the 46th-largest city under the jurisdiction of the United States, with a population of 395,326. San Juan was founded by Spanish colonists in 1521, who called it Ciudad de Puerto Rico ("City of Puerto Rico", Spanish for rich port city). Puerto Rico's capital is the third oldest European-established capital city in the Americas, after Santo Domingo, in the Dominican Republic, founded in 1496, and Panama City, in Panama, founded in 1521, and is the oldest European-established 
Title: Puerto Rico
Content:  The most populous city is the capital, San Juan, with 318,441 people based on a 2019 estimate by the Census Bureau. Other major cities include Bayamón, Carolina, Ponce, and Caguas. Of the ten most populous cities on the island, eight are located within what is considered San Juan's metropolitan area, while the other two are located in the south (Ponce) and west (Mayagüez) of the island.
Title: Puerto Rico, Argentina
Content:  Puerto Rico is the capital city of Libertador General San Martín, in the Misiones Province of Argentina.  It is located at 26° 48' south latitude and 55° 01' west longitude, along the Paraná River. It limits to the south with the city of Capioví, at east and north with the Garuhapé and to the east west with Paraguay. Strategically located along Route 12, it is half way between the Iguazu Falls and the province's capital Posadas. With almost 12.500 hectares, the city has a population of around 20.000 people, mainly composed of European immigrants.
Title: Puerto Rico
Content:  Puerto Rico (abbreviated PR;, Borinquen), officially the Commonwealth of Puerto Rico (Estado Libre Asociado de Puerto Rico) is a Caribbean island and unincorporated territory of the United States. It is located in the northeast Caribbean Sea, approximately 1000 mi southeast of Miami, Florida. The Commonwealth is an archipelago among the Greater Antilles located between the Dominican Republic and the U.S. Virgin Islands; it includes the eponymous main island and several smaller islands, such as Mona, Culebra, and Vieques. It has roughly 3.2 million residents, and its capital and most populous city is San Juan. Spanish and English are the official languages of the executive branch of government, 
Title: List of companies of Puerto Rico
Content:   Puerto Rico is an unincorporated territory of the United States located in the northeast Caribbean Sea. It is an archipelago that includes the main island of Puerto Rico and a number of smaller ones such as Mona, Culebra, and Vieques. The capital and most populous city is San Juan. Its official languages are Spanish and English, though Spanish predominates. The commonwealth's population is approximately 3.4 million.
Title: Puerta de Tierra, San Juan
Content: Capitol of Puerto Rico (Capitolio de Puerto Rico) 
Title: Capitol of Puerto Rico
Content:  The Capitol of Puerto Rico (Capitolio de Puerto Rico) is located on the Islet of San Juan just outside the walls of Old San Juan. The building is home to the bicameral Legislative Assembly, composed of the House of Representatives and Senate. The building is located in the Puerta de Tierra sector of San Juan. The Capitol is also commonly referred to as the Palace of the Laws (Palacio de las Leyes).
Title: Outline of Puerto Rico
Content: Capital of Puerto Rico: San Juan ; Cities of Puerto Rico Municipalities of Puerto Rico 
Title: Index of Puerto Rico–related articles
Content: San Juan Bay ; San Juan – Capital of Puerto Rico since 1521 ; San Juan National Historic Site ; San Juan ship dock ; San Juan Uprising ; School of Tropical Medicine ; Scouting in Puerto Rico ; Senate of the Commonwealth of Puerto Rico ; SITRAS ; Sovereigntism (Puerto Rico) ; Spanish colonization of the Americas ; Spanish language ; Spanish immigration to Puerto Rico ; Sports in Puerto Rico ; commons:Category:Sports in Puerto Rico ; commons:Category:Sports venues in Puerto Rico ; commons:Category:Buildings and structures in Puerto Rico ; Statehood movement in Puerto Rico ; Supreme Court of the Commonwealth of Puerto Rico ; Symbols of the Commonwealth of Puerto Rico Statehood movement in Puerto Rico ; Supreme Court of the Commonwealth of Puerto Rico ; Symbols of the Commonwealth of Puerto Rico 
Title: Puerto Rico
Content:  the entire island as Puerto Rico, while San Juan became the name used for the main trading/shipping port and the capital city. The island's name was changed to Porto Rico by the United States after the Treaty of Paris of 1898. The anglicized name was used by the U.S. government and private enterprises. The name was changed back to Puerto Rico in 1931 by a joint resolution in Congress introduced by Félix Córdova Dávila. The official name of the entity in Spanish is Estado Libre Asociado de Puerto Rico ("Free Associated State of Puerto Rico"), while its official English name is Commonwealth of Puerto Rico.

Question: What is the capital of Puerto Rico?
Answer: San Juan.
San Juan, Puerto Rico.
San Juan Bautista.
San Juan Municipio.
San Juan de Puerto Rico.