Question: What is the capital of Mexico in the language spoken in the land near the worm's first known location?

full_context: Document 1: Mexico City: Mexico City, or the City of Mexico (Spanish: Ciudad de México  audio (help·info) American Spanish: [sjuˈða(ð) ðe ˈméxiko]; abbreviated as "CDMX"), is the capital of Mexico. 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 2,240 metres (7,350 ft). The city consists of sixteen municipalities (previously called boroughs).
Document 2: Annelid: Earthworms are Oligochaetes that support terrestrial food chains both as prey and in some regions are important in aeration and enriching of soil. The burrowing of marine polychaetes, which may constitute up to a third of all species in near-shore environments, encourages the development of ecosystems by enabling water and oxygen to penetrate the sea floor. In addition to improving soil fertility, annelids serve humans as food and as bait. Scientists observe annelids to monitor the quality of marine and fresh water. Although blood-letting is no longer in favor with doctors, some leech species are regarded as endangered species because they have been over-harvested for this purpose in the last few centuries. Ragworms' jaws are now being studied by engineers as they offer an exceptional combination of lightness and strength.
Document 3: Languages of the Falkland Islands: The only official language of the Falkland Islands is English, and this is spoken by almost everyone on a day-to-day basis. Spanish is spoken by 10% of the population, a significant minority. Most of the Spanish speakers are immigrants, foreign workers, and expats, predominantly from Chile and Argentina.
Document 4: Predation: Parasites can at times be difficult to distinguish from grazers. Their feeding behavior is similar in many ways, however they are noted for their close association with their host species. While a grazing species such as an elephant may travel many kilometers in a single day, grazing on many plants in the process, parasites form very close associations with their hosts, usually having only one or at most a few in their lifetime. This close living arrangement may be described by the term symbiosis, "living together", but unlike mutualism the association significantly reduces the fitness of the host. Parasitic organisms range from the macroscopic mistletoe, a parasitic plant, to microscopic internal parasites such as cholera. Some species however have more loose associations with their hosts. Lepidoptera (butterfly and moth) larvae may feed parasitically on only a single plant, or they may graze on several nearby plants. It is therefore wise to treat this classification system as a continuum rather than four isolated forms.
Document 5: Mexico: Mexico (Spanish: México [ˈmexiko] (listen); Nahuatl languages: Mēxihco), officially the United Mexican States (Spanish: Estados Unidos Mexicanos [esˈtaðos uˈniðoz mexiˈkanos] (listen)), is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize, and the Caribbean Sea; and to the east by the Gulf of Mexico. Covering almost 2,000,000 square kilometers (770,000 sq mi), the nation is the fifth largest country in the Americas by total area and the 13th largest independent state in the world. With an estimated population of over 120 million people, the country is the tenth most populous state and the most populous Spanish-speaking state in the world, while being the second most populous nation in Latin America after Brazil. Mexico is a federation comprising 31 states and Mexico City, a special federal entity that is also the capital city and its most populous city. Other metropolises in the state include Guadalajara, Monterrey, Puebla, Toluca, Tijuana and León.
Document 6: Galápagos Islands: Galápagos Islands Geography Location Pacific Ocean Coordinates 0 ° 40 ′ S 90 ° 33 ′ W ﻿ / ﻿ 0.667 ° S 90.550 ° W ﻿ / - 0.667; - 90.550 Coordinates: 0 ° 40 ′ S 90 ° 33 ′ W ﻿ / ﻿ 0.667 ° S 90.550 ° W ﻿ / - 0.667; - 90.550 Total islands 21 Major islands 18 Area 7,880 km (3,040 sq mi) Highest elevation 1,707 m (5,600 ft) Highest point Volcán Wolf Administration Ecuador Province Galápagos Capital city Puerto Baquerizo Moreno Demographics Population 26,640 (2012) Pop. density 3 / km (8 / sq mi) Additional information Time zone GALT (UTC - 6) UNESCO World Heritage Site Official name Galápagos Islands Type Natural Criteria vii, viii, ix, x Designated 1978 (2nd session) Reference no. Region Latin America and the Caribbean Extension 2001 and 2003 Endangered 2007 -- 2010
Document 7: Mexico City: Mexico’s capital is both the oldest capital city in the Americas and one of two founded by Amerindians (Native Americans), the other being Quito. The city was originally built on an island of Lake Texcoco by the Aztecs in 1325 as Tenochtitlan, which was almost completely destroyed in the 1521 siege of Tenochtitlan, and subsequently redesigned and rebuilt in accordance with the Spanish urban standards. In 1524, the municipality of Mexico City was established, known as México Tenochtitlán, and as of 1585 it was officially known as Ciudad de México (Mexico City). Mexico City served as the political, administrative and financial center of a major part of the Spanish colonial empire. After independence from Spain was achieved, the Federal District was created in 1824.
Document 8: San Cristóbal Island: The largest fresh water lake in the archipelago, Laguna El Junco, is located in a crater in the highlands of San Cristóbal, in the southern half of the island. The lake harbors a large population of birdlife, but reaching the lake requires a short uphill walk.  Nearby, La Galapaguera is a breeding station and sanctuary for giant tortoises.
Document 9: Mexico City: Mexico City, or the City of Mexico (Spanish: Ciudad de México, American Spanish: (sjuˈða (ð) ðe ˈmexiko) (listen); abbreviated as CDMX, Nahuatl languages: Āltepētl Mēxihco), is the capital of Mexico and the most populous city in North America. Mexico City is one of the most important cultural and financial centres in the Americas. It is located in the Valley of Mexico (Valle de México), a large valley in the high plateaus in the center of Mexico, at an altitude of 2,240 meters (7,350 ft). The city has 16 boroughs.
Document 10: Galápagos Islands: The Galápagos Islands (official name: Archipiélago de Colón, other Spanish name: Las Islas Galápagos, Spanish pronunciation: (las ˈiɦla ɣaˈlapaɣo)), part of the Republic of Ecuador, are an archipelago of volcanic islands distributed on either side of the Equator in the Pacific Ocean surrounding the centre of the Western Hemisphere, 906 km (563 mi) west of continental Ecuador. The islands are known for their vast number of endemic species and were studied by Charles Darwin during the second voyage of HMS Beagle, as his observations and collections contributed to the inception of Darwin's theory of evolution by means of natural selection.
Document 11: Mexico City: Mexico City is located in the Valley of Mexico, sometimes called the Basin of Mexico. This valley is located in the Trans-Mexican Volcanic Belt in the high plateaus of south-central Mexico. It has a minimum altitude of 2,200 meters (7,200 feet) above sea level and is surrounded by mountains and volcanoes that reach elevations of over 5,000 metres (16,000 feet). This valley has no natural drainage outlet for the waters that flow from the mountainsides, making the city vulnerable to flooding. Drainage was engineered through the use of canals and tunnels starting in the 17th century.
Document 12: Symbiosis: Symbiotic relationships include those associations in which one organism lives on another (ectosymbiosis, such as mistletoe), or where one partner lives inside the other (endosymbiosis, such as lactobacilli and other bacteria in humans or Symbiodinium in corals). Symbiosis is also classified by physical attachment of the organisms; symbiosis in which the organisms have bodily union is called conjunctive symbiosis, and symbiosis in which they are not in union is called disjunctive symbiosis.
Document 13: Symbiosis: One of the most spectacular examples of obligate mutualism is between the siboglinid tube worms and symbiotic bacteria that live at hydrothermal vents and cold seeps. The worm has no digestive tract and is wholly reliant on its internal symbionts for nutrition. The bacteria oxidize either hydrogen sulfide or methane, which the host supplies to them. These worms were discovered in the late 1980s at the hydrothermal vents near the Galapagos Islands and have since been found at deep-sea hydrothermal vents and cold seeps in all of the world's oceans.
Document 14: Galápagos Islands: The Galápagos Islands and their surrounding waters form the Galápagos Province of Ecuador, the Galápagos National Park, and the Galápagos Marine Reserve. The principal language on the islands is Spanish. The islands have a population of slightly over 25,000.
Document 15: Symbiosis: The definition of symbiosis has varied among scientists. Some believe symbiosis should only refer to persistent mutualisms, while others believe it should apply to any type of persistent biological interaction (in other words mutualistic, commensalistic, or parasitic). After 130 years of debate, current biology and ecology textbooks now use the latter "de Bary" definition or an even broader definition (where symbiosis means all species interactions), with the restrictive definition no longer used (in other words, symbiosis means mutualism).
ground_truth: Ciudad de México
sub_queries: What land is near the worms' first known location? Answer: the Galapagos Islands
what language do they speak in the Galapagos Islands Answer: Spanish
what's the capital of mexico in Spanish Answer: Ciudad de México