Context: Gainesville is the county seat and largest city in Alachua County, Florida, United States, and the principal city of the Gainesville, Florida Metropolitan Statistical Area (MSA). The population of Gainesville in the 2013 US Census estimates was 127,488, a 2.4% growth from 2010. Gainesville is the largest city in the region of North Central Florida. It is also a component of the Gainesville-Lake City Combined Statistical Area, which had a 2013 population of 337,925., Tampa is a major city in, and the county seat of, Hillsborough County, Florida. It is located on the west coast of Florida on Tampa Bay, near the Gulf of Mexico, and is part of the Tampa Bay Metropolitan Area. The city had a population of 346,037 in 2011., The State University System of Florida (SUS, or SUSF out-of-state) is a system of twelve public universities in the U.S. state of Florida. As of 2015, over 341,000 students were enrolled in Florida's state universities. Together with the Florida College System, which includes Florida's 28 community colleges and state colleges, it is part of Florida's system of public higher education. The system, headquartered in Tallahassee, is overseen by a Chancellor and governed by the Florida Board of Governors., John Stuart Allen ( May 13 , 1907 -- December 27 , 1982 ) was an American astronomer , university professor and university president . He was a native of Indiana , and pursued a career as a professor of astronomy after receiving his bachelor 's , master 's and doctorate degrees . Allen was the interim president of the University of Florida located in Gainesville , Florida , and subsequently became the founding president of the University of South Florida in Tampa , Florida ., A comet is an icy small Solar System body that, when passing close to the Sun, warms and begins to evolve gasses, a process called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail. These phenomena are due to the effects of solar radiation and the solar wind acting upon the nucleus of the comet. Comet nuclei range from a few hundred metres to tens of kilometres across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times the Earth's diameter, while the tail may stretch one astronomical unit. If sufficiently bright, a comet may be seen from the Earth without the aid of a telescope and may subtend an arc of 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures., Tampa Bay is a large natural harbor and estuary connected to the Gulf of Mexico on the west central coast of Florida, comprising Hillsboro Bay, McKay Bay, Old Tampa Bay, Middle Tampa Bay, and Lower Tampa Bay. The surrounding area is home to about 4 million residents, making it a heavily used commercial and recreational waterway but putting much stress on the bay's ecosystem, which once teemed with enough wildlife to easily support an extensive indigenous culture. Much greater care has been taken in recent decades to mitigate the effects of human habitation on Tampa Bay, and water quality has slowly improved over time., Indianapolis (pronounced ), is the capital and largest city of the U.S. state of Indiana and the seat of Marion County. It is in the East North Central region of the Midwestern United States. With an estimated population of 853,173 in 2015, Indianapolis is the second most populous city in the Midwest, after Chicago, and 14th largest in the U.S. The city is the economic and cultural center of the Indianapolis metropolitan area, home to 2 million people, the 34th most populous metropolitan statistical area in the U.S. Its combined statistical area ranks 26th, with 2.4 million inhabitants. Indianapolis covers , making it the 16th largest city by land area in the U.S., Indiana is a U.S. state located in the midwestern and Great Lakes regions of North America. Indiana is the 38th largest by area and the 16th most populous of the 50 United States. Its capital and largest city is Indianapolis. Indiana was admitted to the United States as the 19th U.S. state on December 11, 1816., Astronomy is a natural science that studies celestial objects and phenomena. It applies mathematics, physics, and chemistry, in an effort to explain the origin of those objects and phenomena and their evolution. Objects of interest include planets, moons, stars, galaxies, and comets; while the phenomena include supernovae explosions, gamma ray bursts, and cosmic microwave background radiation. More generally, all astronomical phenomena that originate outside Earth's atmosphere are within the purview of astronomy. A related but distinct subject, physical cosmology, is concerned with the study of the Universe as a whole., The University of Florida (commonly referred to as Florida or UF) is an American public land-grant, sea-grant, and space-grant research university on a campus in Gainesville, Florida. It is a senior member of the State University System of Florida and traces its origins to 1853, and has operated continuously on its Gainesville campus since September 1906., Subject: john s. allen, Relation: position_held, Options: (A) 15 (B) 4 (C) chancellor (D) hillsborough county
Output: chancellor