Information: - Banska Stiavnica is a town in central Slovakia, in the middle of an immense caldera created by the collapse of an ancient volcano. For its size, the caldera is known as Stiavnica Mountains. Banska Stiavnica has a population of more than 10,000. It is a completely preserved medieval town. Because of their historical value, the town and its surroundings were proclaimed by the UNESCO to be a World Heritage Site on December 11, 1993. - Slovakia, officially the Slovak Republic, is a landlocked country in Central Europe. It is bordered by the Czech Republic and Austria to the west, Poland to the north, Ukraine to the east and Hungary to the south. Slovakia's territory spans about and is mostly mountainous. The population is over 5 million and comprises mostly ethnic Slovaks. The capital and largest city is Bratislava. The official language is Slovak, a member of the Slavic language family. - Alexander ( Sandor ) Pituk ( October 26 , 1904 in Banska Stiavnica -- April 30 , 2002 in Banska Stiavnica ) was a Slovak and Hungarian chess problem composer and judge . He resided all his life in Banska Stiavnica and worked as a carpenter . He was appointed an International Judge of Chess Compositions and was awarded the FIDE Master for Chess Composition and Honorary Master of Chess Composition title . He is author of 584 compositions ( 60 of them award winners ) . His brother Jozsef Viktorian Pituk ( 1906 -- 1991 ) was an established painter in Budapest . - The Stiavnica Mountains (also Stiavnicke Mountains) are a volcanic mountain range southern central Slovakia. They are part of Inner Western Carpathians and the Slovenske stredohorie Mountains. The area is protected by Stiavnica Mountains Protected Landscape Area. - A caldera is a large cauldron-like depression that forms following the evacuation of a magma chamber/reservoir. When large volumes of magma are erupted over a short time period, structural support for the crust above the magma chamber is lost. The ground surface then collapses downward into the partially emptied magma chamber, leaving a massive depression at the surface (from one to dozens of kilometers in diameter). Although sometimes described as a crater, the feature is actually a type of sinkhole, as it is formed through subsidence and collapse rather than an explosion or impact. Only seven known caldera-forming collapses have occurred since the start of the 20th century, most recently at Bararbunga volcano in Iceland. Given the information above, choose from the list below the object entity that exhibits the relation 'country of citizenship' with the subject 'alexander pituk'. Choices: - hungary - iceland - slovakia - ukraine
hungary

Information: - The Graduate School of Arts and Sciences (GSAS) is the academic unit responsible for many post-baccalaureate degree programs offered through the Faculty of Arts and Sciences at Harvard University. GSAS offers several master's degree programsMaster of Arts (AM), Master of Science (SM), and Master of Engineering (ME)and the Doctor of Philosophy (PhD) degree in more than fifty divisions, departments, and committees, spanning subjects in both the sciences and the humanities, including several interdepartmental programs. GSAS also administers the Graduate Special Student Program, which enables individuals who hold the baccalaureate degree to take graduate-level courses on a non-degree basis, and the Visiting Fellow Program, which enables advanced doctoral students and persons who already hold the PhD to conduct research at Harvard. Finally, GSAS also nominally oversees PhD programs in Harvard's professional schools: the Harvard Business School, Harvard Divinity School, Harvard Graduate School of Education, the basic science departments in Harvard Medical School, the Harvard School of Public Health, the Graduate School of Design, and the John F. Kennedy School of Government. - Massachusetts ; officially the Commonwealth of Massachusetts, is the most populous state in the New England region of the northeastern United States. It is bordered by the Atlantic Ocean to the east, the states of Connecticut and Rhode Island to the south, New Hampshire and Vermont to the north, and New York to the west. The state is named for the Massachusett tribe, which once inhabited the area. The capital of Massachusetts and the most populous city in New England is Boston. Over 80% of Massachusetts' population lives in the Greater Boston metropolitan area, a region influential upon American history, academia, and industry. Originally dependent on agriculture, fishing and trade, Massachusetts was transformed into a manufacturing center during the Industrial Revolution. During the 20th century, Massachusetts' economy shifted from manufacturing to services. Modern Massachusetts is a global leader in biotechnology, engineering, higher education, finance, and maritime trade. - Robert Tanner Freeman ( 1846 -- 1873 ) was the first African - American to graduate from the Harvard School of Dental Medicine and may have been the first African - American awarded a dental degree in the United States . - Medicine (British English ; American English ) is the science and practice of the diagnosis, treatment, and prevention of disease. The word "medicine" is derived from Latin "medicus", meaning "a physician". Medicine encompasses a variety of health care practices evolved to maintain and restore health by the prevention and treatment of illness. Contemporary medicine applies biomedical sciences, biomedical research, genetics, and medical technology to diagnose, treat, and prevent injury and disease, typically through pharmaceuticals or surgery, but also through therapies as diverse as psychotherapy, external splints and traction, medical devices, biologics, and ionizing radiation, amongst others. - The Harvard School of Dental Medicine (HSDM) is the dental school of Harvard University. It is located in the Longwood Medical Area in Boston, Massachusetts, United States. In addition to the DMD degree, HSDM offers specialty training programs, advanced training programs, a Ph.D. program through the Harvard Graduate School of Arts and Sciences, and Master of Medical Sciences & Doctor of Medical Sciences degrees through Harvard Medical School. Being highly selective, admission into the pre-doctoral DMD program, as well as into the post-doctoral residency programs, is fiercely competitive. At its heart, the program considers dentistry a specialty of medicine. Therefore, all students at HSDM experience dual citizenship in both Harvard School of Dental Medicine and Harvard Medical School. - Harvard Medical School (HMS) is the graduate medical school of Harvard University. It is located in the Longwood Medical Area of the Mission Hill neighborhood of Boston, Massachusetts. - Harvard University is a private Ivy League research university in Cambridge, Massachusetts, established in 1636, whose history, influence, and wealth have made it one of the world's most prestigious universities. - A dental school (school of dental medicine, school of dentistry, dental college) is a tertiary educational institutionor part of such an institutionthat teaches dental medicine to prospective dentists. Upon successful completion, the graduate receives a degree in Dentistry, Dental Surgery, or Dental Medicine, which, depending upon the jurisdiction, might be a bachelor's degree, master's degree, a professional degree, or a doctorate. Schools can also offer postgraduate training in general dentistry, and/or training in endodontics, oral and maxillofacial surgery, oral pathology, oral and maxillofacial radiology, orthodontics, pedodontics, periodontics, prosthodontics, or dental public health. Given the information above, choose from the list below the object entity that exhibits the relation 'educated at' with the subject 'robert tanner freeman'. Choices: - business school - doctor of philosophy - harvard - harvard divinity school - harvard medical school - harvard university - medicine - new york
harvard medical school