Information:  - Mexico City, officially City of Mexico (, ; abbreviated as "CDMX"), is the capital and most populous city of the United Mexican States. As an "alpha" global city, Mexico City is one of the most important financial centers in the Americas. It is located in the Valley of Mexico ("Valle de México"), a large valley in the high plateaus at the center of Mexico, at an altitude of . The city consists of sixteen municipalities (previously called boroughs).  - The New York City Subway is a rapid transit system owned by the City of New York and leased to the New York City Transit Authority, a subsidiary agency of the state-run Metropolitan Transportation Authority (MTA). Opened in 1904, the New York City Subway is one of the world's oldest public transit systems, one of the world's most used metro systems, and the metro system with the most stations. It offers service 24 hours per day and every day of the year.  - Haiti , officially the Republic of Haiti, is a sovereign state located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean Sea. It occupies the western three-eighths of the island, which it shares with the Dominican Republic. Haiti is in size and has an estimated 10.6 million people, making it the most populous country in the Caribbean Community (CARICOM) and the second-most populous country in the Caribbean as a whole.  - Latin (Latin: ) is a classical language belonging to the Italic branch of the Indo-European languages. The Latin alphabet is derived from the Etruscan and Greek alphabets.  - Ibero-America or Iberian America is a region in the Americas comprising countries or territories where Spanish or Portuguese are predominant languages, usually former territories of Portugal or Spain. Portugal and Spain are themselves included in some definitions, such as that of the Ibero-American Summit and the Organization of Ibero-American States. The Organization of Ibero-American States also includes Spanish-speaking Equatorial Guinea, in Central Africa, but not the Portuguese-speaking African countries.  - Guadeloupe (Antillean Creole: "Gwadloup") is an insular region of France located in the Leeward Islands, part of the Lesser Antilles in the Caribbean. Administratively, it is an overseas region consisting of a single overseas department. It has a land area of and an estimated population of 400,132 as of January 2015.  - A conurbation is a region comprising a number of cities, large towns, and other urban areas that, through population growth and physical expansion, have merged to form one continuous urban or industrially developed area. In most cases, a conurbation is a polycentric urbanised area, in which transportation has developed to link areas to create a single urban labour market or travel to work area.  - The Mexico City Metro, officially called Sistema de Transporte Colectivo, often shortened to STC, is a metro system that serves the metropolitan area of Mexico City, including some municipalities in Mexico State. It is the second largest metro system in North America after the New York City Subway. In 2015, the system served 1.623 billion passengers, placing it as the ninth highest ridership in the world.  - The term Hispanic (or , , , , "hispàno") broadly refers to the people, nations, and cultures that have a historical link to Spain. It commonly applies to countries once colonized by the Spanish Empire in the Americas (see Spanish colonization of the Americas) and Asia, particularly the countries of Latin America and the Philippines. It could be argued that the term should apply to all Spanish-speaking cultures or countries, as the historical roots of the word specifically pertain to the Iberian region. It is difficult to label a nation or culture with one term, such as "Hispanic", as the ethnicities, customs, traditions, and art forms (music, literature, dress, architecture, cuisine, and others) vary greatly by country and region. The Spanish language and Spanish culture are the main traditions.  - Chile, officially the Republic of Chile, is a South American country occupying a long, narrow strip of land between the Andes to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far south. Chilean territory includes the Pacific islands of Juan Fernández, Salas y Gómez, Desventuradas, and Easter Island in Oceania. Chile also claims about of Antarctica, although all claims are suspended under the Antarctic Treaty.  - The Santiago Metro ( Spanish : Metro de Santiago ) is the underground railway network serving the city of Santiago , Chile . This network is one of the most modern in Latin America , being the second largest following the Mexico City Metro , and it is 7th in frequency worldwide . It currently has five lines , 108 stations , and 103 kilometres ( 64.0 mi ) of revenue route . This service is administered by the state - owned Metro S.A. and is the first of three urban railway systems in Chile , along with the Biotrén of Concepción ( 1999 ) and Merval of Valparaíso ( 2005 ) . The Santiago Metro carries around 2.5 million passengers every day . This figure represents an increase of more than a million passengers per day compared to figures prior to 2007 , when the ambitious Transantiago project was launched , in which the metro plays an important role in the public transport system serving the city . Its highest passenger peak was reached on 31 October 2012 , reaching 2,780,666 passengers . Along with its five operational lines , two new lines are being built -- Line 6 , connecting Cerrillos with Providencia with 11 new stations and an extension of 15.3 kilometres was announced in late 2009 and ratified in 2011 , while the long delayed Line 3 will connect Huechuraba and La Reina with an extension of 21.7 kilometres and 19 new stations . Investment for the construction of these extensions is of nearly US $ 2.7bn and is expected to reach 120 million annual trips . In 2014 , it was announced that Line 3 would be expanded even further towards the northwest , reaching Quilicura , and Line 2 would be expanded further south towards El Bosque and San Bernardo , adding 7 new stations to the network and an additional 8.8 kilometres of tracks by 2020 . It was also announced that analytical studies would begin for the construction of a new line , Line 7 to cross the city from east to west to relieve congestion on Line 1 . In March 2012 , the Santiago Metro was chosen as the best underground system in the Americas , after being...  - Martinique is an insular region of France located in the Lesser Antilles in the eastern Caribbean Sea, with a land area of and a population of 385,551 inhabitants as of January 2013. Like Guadeloupe, it is an overseas region of France, consisting of a single overseas department. One of the Windward Islands, it is directly north of Saint Lucia, southeast of Puerto Rico, northwest of Barbados, and south of Dominica.  - Santiago de Chile is the capital and largest city of Chile. It is also the center of its largest conurbation. Santiago is located in the country's central valley, at an elevation of above mean sea level.  - Latin America is a group of countries and dependencies in the Americas where Romance languages are predominant. The term originated in 19th century France as "Amérique latine" to consider French-speaking territories in the Americas (Haiti, French Guiana, Martinique, Guadeloupe, Saint Martin, Saint Barthélemy) along with the larger group of countries where Spanish and Portuguese languages prevailed. It is therefore broader than the terms Ibero-America or Hispanic Americathough it usually excludes French Canada and modern French Louisiana.  - Valparaíso is a major city, seaport, and educational center in the county or commune of Valparaíso, Chile. Greater Valparaíso is the second largest metropolitan area in the country. Valparaíso is located northwest of Santiago and is one of the South Pacific's most important seaports. Valparaíso is the capital of Chile's third most populated administrative region and has been the headquarters for the Chilean National Congress since 1990.  - Hispanic America, more generally called Spanish America, (Spanish: "Hispanoamérica", "América española" or "América hispana") is the region comprising the Spanish-speaking nations in the Americas.  - The Romance languages (sometimes called the Romanic languages, Latin languages, or Neo-Latin languages) are the modern languages that evolved from Vulgar Latin between the sixth and ninth centuries and that thus form a branch of the Italic languages within the Indo-European language family.  - France, officially the French Republic, is a country with territory in western Europe and several overseas regions and territories. The European, or metropolitan, area of France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. Overseas France include French Guiana on the South American continent and several island territories in the Atlantic, Pacific and Indian oceans. France spans and had a total population of almost 67 million people as of January 2017. It is a unitary semi-presidential republic with the capital in Paris, the country's largest city and main cultural and commercial centre. Other major urban centres include Marseille, Lyon, Lille, Nice, Toulouse and Bordeaux.  - French Guiana (pronounced or ), officially called Guiana, is an overseas department and region of France, located on the north Atlantic coast of South America in the Guyanas. It borders Brazil to the east and south, and Suriname to the west. Its area has a very low population density of only 3 inhabitants per km, with half of its 244,118 inhabitants in 2013 living in the metropolitan area of Cayenne, its capital. By land area, it is the second largest region of France and the largest outermost region within the European Union.    After reading the paragraphs above, we are interested in knowing the entity with which 'santiago metro' exhibits the relationship of 'instance of'. Find the answer from the choices below.  Choices: - agency  - alphabet  - archipelago  - architecture  - area  - branch  - capital  - century  - city  - city of new york  - coast  - community  - congress  - conurbation  - country  - county  - cuisine  - culture  - day  - department  - empire  - global city  - group  - island  - january  - label  - language  - language family  - latin alphabet  - market  - metro system  - nation  - number  - population  - portugal  - region  - region of france  - republic  - romance  - saint  - seaport  - single  - state  - term  - territory  - three  - transportation authority  - treaty  - year
Answer:
metro system