Question: Information:  - The Caribbean Sea is a sea of the Atlantic Ocean in the tropics of the Western Hemisphere. It is bounded by Mexico and Central America to the west and south west, to the north by the Greater Antilles starting with Cuba, to the east by the Lesser Antilles, and to the south by the north coast of South America.  - Arenal Volcano , in Spanish Volcán Arenal , is an active andesitic stratovolcano in north - western Costa Rica around 90 km northwest of San José , in the province of Alajuela , canton of San Carlos , and district of La Fortuna . The Arenal volcano measures at least 1,633 metres ( 5,358 ft ) high . It is conically shaped with a crater 140 metres ( 460 ft ) in diameter . Geologically , Arenal is considered a young volcano and it is estimated to be less than 7,500 years old . It is also known as `` Pan de Azúcar '' , `` Canaste '' , `` Volcan Costa Rica '' , `` Volcan Río Frío '' or `` Guatusos Peak '' . The volcano was dormant for hundreds of years and exhibited a single crater at its summit , with minor fumaroles activity , covered by dense vegetation . In 1968 it erupted unexpectedly , destroying the small town of Tabacón . Due to the eruption three more craters were created on the western flanks but only one of them still exists today . Since October 2010 , Arenal has become dormant , with no explosions since December 2010 .  - Panama, officially called the Republic of Panama, is a country usually considered to be entirely in North America or Central America. It is bordered by Costa Rica to the west, Colombia (in South America) to the southeast, the Caribbean Sea to the north and the Pacific Ocean to the south. The capital and largest city is Panama City, whose metropolitan area is home to nearly half of the country's 3.9 million people.  - Costa Rica (literally meaning "Rich Coast"), officially the Republic of Costa Rica, is a country in Central America, bordered by Nicaragua to the north, Panama to the southeast, the Pacific Ocean to the west, the Caribbean Sea to the east, and Ecuador to the south of Cocos Island. It has a population of around 4.5 million, of whom nearly a quarter live in the metropolitan area of the capital and largest city, San José.  - Ecuador, officially the Republic of Ecuador (which literally translates as "Republic of the Equator"), is a representative democratic republic in northwestern South America, bordered by Colombia on the north, Peru on the east and south, and the Pacific Ocean to the west. Ecuador also includes the Galápagos Islands in the Pacific, about west of the mainland.  - Central America is the southernmost, isthmian portion of the North American continent, which connects with South America on the southeast. Central America is bordered by Mexico to the north, Colombia to the southeast, the Caribbean Sea to the east, and the Pacific Ocean to the west. Central America consists of seven countries: Belize, Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica and Panama. The combined population of Central America is between 41,739,000 (2009 estimate) and 42,688,190 (2012 estimate).  - Nicaragua, officially the Republic of Nicaragua, is the largest country in the Central American isthmus. Nicaragua's capital, Managua, is the country's largest city and the third-largest city in Central America. The multi-ethnic population of six million includes indigenous peoples, Europeans, Africans, and Asians. The main language is Spanish. Native tribes on the eastern coast speak their own languages.    Given the information, choose the subject and object entities that have the relation of 'continent'.
Answer:
arenal volcano , central america