Q:Information: - Argentina, officially the Argentine Republic, is a federal republic in the southern half of South America. Sharing the bulk of the Southern Cone with its neighbor Chile to the west, the country is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. With a mainland area of , Argentina is the eighth-largest country in the world, the second largest in Latin America, and the largest Spanish-speaking one. The country is subdivided into twenty-three provinces (singular "provincia") and one autonomous city ("ciudad autonoma"), Buenos Aires, which is the federal capital of the nation as decided by Congress. The provinces and the capital have their own constitutions, but exist under a federal system. - A caudillo (Old Spanish: "cabdillo", from Latin "capitellum", diminutive of "caput" "head") was a military-landowner who possessed political power and exercised it in a form considered authoritarian by its adversaries. The term can be translated into English as "leader" or "chief", or more pejoratively as "warlord", "dictator" or "strongman" and has been used to refer to charismatic populist leaders. In Hispanic America, another sense developed of the "caudillo" as a demagogic lawyer and politician, with the populist Jorge Eliecer Gaitan having been honored with the title "Caudillo of The Colombian People". Other uses of the term referred to leaders without state responsibilities like "cacique" in Spain and those wielding oligarchicalplutocratic power. - A politician (from "politics" + "-ian", from the Greek title of Aristotle's book "Politika", meaning "Civic Affairs") is a person active in party politics, or a person holding or seeking office in government. In democratic countries, politicians seek elective positions within a government through elections or, at times, temporary appointment to replace politicians who have died, resigned or have been otherwise removed from office. In non-democratic countries, they employ other means of reaching power through appointment, bribery, revolutions and intrigues. Some politicians are experienced in the art or science of government. Politicians propose, support and create laws or policies that govern the land and, by extension, its people. Broadly speaking, a "politician" can be anyone who seeks to achieve political power in any bureaucratic institution. - Juan Manuel de Rosas (30 March 1793 14 March 1877), nicknamed "Restorer of the Laws", was a politician and army officer who ruled Buenos Aires Province and briefly the Argentine Confederation. Although born into a wealthy family, Rosas independently amassed a personal fortune, acquiring large tracts of land in the process. Rosas enlisted his workers in a private militia, as was common for rural proprietors, and took part in the factious disputes that led to numerous civil wars in his country. Victorious in warfare, personally influential, and with vast landholdings and a loyal private army, Rosas became the quintessential caudillo, as provincial warlords in the region were known. He eventually reached the rank of brigadier general, the highest in the Argentine army, and became the undisputed leader of the Federalist Party. - Buenos Aires is the capital and most populous city of Argentina. The city is located on the western shore of the estuary of the Rio de la Plata, on the South American continent's southeastern coast. "Buenos aires" can be translated as "fair winds" or "good airs", but the first one was the meaning intended by the founders in the 16th century, by the use of the original name "Real de Nuestra Senora Santa Maria del Buen Ayre". The Greater Buenos Aires conurbation, which also includes several Buenos Aires Province districts, constitutes the fourth-most populous metropolitan area in the Americas, with a population of around 17 million. - Manuel Vicente Maza ( 1779 -- June 27 , 1839 ) was an Argentine lawyer and federal politician . He was governor of Buenos Aires , and was killed after the discovery of a failed plot to kill Juan Manuel de Rosas . - The Argentine Confederation (Spanish: "Confederacion Argentina") is one of the official names of Argentina according to the Argentine Constitution, Article 35. It was the name of the country from 1831 to 1852, when the provinces were organized as a confederation without a head of state. The governor of Buenos Aires Province (Juan Manuel de Rosas during most of the period) managed foreign relations during this time. Under his rule, the Argentine Confederation resisted attacks by Brazil, Bolivia, Uruguay, France and Britain, as well other Argentine factions during the Argentine Civil Wars. What object entity has the relation of 'position held' with the subject 'manuel vicente maza'? Choices: - congress - governor of buenos aires province - head of state - lawyer - leader - politician
A:
governor of buenos aires province