Question: What is part of the college Niels Bohr attended?

full_context: Document 1: Copenhagen University Library: The Copenhagen University Library (Danish: Københavns Universitetsbibliotek) in Copenhagen, Denmark, is the main research library of the University of Copenhagen. Founded in 1482, it is the oldest library in Denmark.
Document 2: University of Colombo library: University of Colombo library is a centrally administered network of libraries in University of Colombo, Sri Lanka. It is home to one of the largest and oldest collections in Sri Lanka, with its roots dating back to 1870 with the establishment of the library of the Ceylon Medical College.
Document 3: Bohr model: In 1925, a new kind of mechanics was proposed, quantum mechanics, in which Bohr's model of electrons traveling in quantized orbits was extended into a more accurate model of electron motion. The new theory was proposed by Werner Heisenberg. Another form of the same theory, wave mechanics, was discovered by the Austrian physicist Erwin Schrödinger independently, and by different reasoning. Schrödinger employed de Broglie's matter waves, but sought wave solutions of a three - dimensional wave equation describing electrons that were constrained to move about the nucleus of a hydrogen - like atom, by being trapped by the potential of the positive nuclear charge.
Document 4: Hafnium: Hafnium is a chemical element with the symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869, though it was not identified until 1923, by Coster and Hevesy, making it the last stable element to be discovered. Hafnium is named after "Hafnia", the Latin name for Copenhagen, where it was discovered.
Document 5: Ben Roy Mottelson: He moved to Institute for Theoretical Physics (later the Niels Bohr Institute) in Copenhagen on the Sheldon Traveling Fellowship from Harvard, and remained in Denmark. In 1953 he was appointed staff member in CERN's Theoretical Study Group, which was based in Copenhagen, a position he held until he became professor at the newly formed Nordic Institute for Theoretical Physics (Nordita) in 1957. He was a visiting professor at the University of California, Berkeley in Spring 1959. In 1971 he became a naturalized Danish citizen.
Document 6: Harvard University: The Harvard University Library System is centered in Widener Library in Harvard Yard and comprises nearly 80 individual libraries holding over 18 million volumes. According to the American Library Association, this makes it the largest academic library in the United States, and one of the largest in the world. Cabot Science Library, Lamont Library, and Widener Library are three of the most popular libraries for undergraduates to use, with easy access and central locations. There are rare books, manuscripts and other special collections throughout Harvard's libraries; Houghton Library, the Arthur and Elizabeth Schlesinger Library on the History of Women in America, and the Harvard University Archives consist principally of rare and unique materials. America's oldest collection of maps, gazetteers, and atlases both old and new is stored in Pusey Library and open to the public. The largest collection of East-Asian language material outside of East Asia is held in the Harvard-Yenching Library.
Document 7: History of science: In 1938 Otto Hahn and Fritz Strassmann discovered nuclear fission with radiochemical methods, and in 1939 Lise Meitner and Otto Robert Frisch wrote the first theoretical interpretation of the fission process, which was later improved by Niels Bohr and John A. Wheeler. Further developments took place during World War II, which led to the practical application of radar and the development and use of the atomic bomb. Though the process had begun with the invention of the cyclotron by Ernest O. Lawrence in the 1930s, physics in the postwar period entered into a phase of what historians have called "Big Science", requiring massive machines, budgets, and laboratories in order to test their theories and move into new frontiers. The primary patron of physics became state governments, who recognized that the support of "basic" research could often lead to technologies useful to both military and industrial applications. Currently, general relativity and quantum mechanics are inconsistent with each other, and efforts are underway to unify the two.
Document 8: Niels Bohr: Bohr founded the Institute of Theoretical Physics at the University of Copenhagen, now known as the Niels Bohr Institute, which opened in 1920. Bohr mentored and collaborated with physicists including Hans Kramers, Oskar Klein, George de Hevesy, and Werner Heisenberg. He predicted the existence of a new zirconium-like element, which was named hafnium, after the Latin name for Copenhagen, where it was discovered. Later, the element bohrium was named after him.
Document 9: Vilnius University Library: Vilnius University Library or VU Library (also VUL) is the oldest and one of the largest academic libraries of Lithuania. It was founded in 1570 by the Jesuits and as such is nine years older than Vilnius University. VU Library holds 5.4 million documents on shelves measuring 166 kilometres (103 mi) in length. The holdings, accessible to members of the university and wider public, include some of the oldest manuscripts, incunabula and engravings in Lithuania and Eastern Europe. At present the library has 36 thousand users.
Document 10: Niels Bjerrum: Niels Bjerrum was the son of ophthalmologist Jannik Petersen Bjerrum, and started to study at University of Copenhagen in 1897. He received his Master's degree in 1902 and his Doctor's degree in 1908, and did research in coordination complex chemistry under Sophus Mads Jørgensen. He became a docent in 1912, and in 1914 he became professor of chemistry at the Royal Agricultural College ("Landbohøjskolen") in Copenhagen, as successor of Odin Tidemand Christensen. He stayed on this post until his retirement in 1949, and from 1939 to 1946 he was also the Director of the College.
Document 11: Max Planck Society: The Max Planck Society and its predecessor Kaiser Wilhelm Society hosted several renowned scientists in their fields, including luminaries such as Otto Hahn, Werner Heisenberg, and Albert Einstein.
Document 12: Paris: There are several academic libraries and archives in Paris. The Sorbonne Library in the 5th arrondissement is the largest university library in Paris. In addition to the Sorbonne location, there are branches in Malesherbes, Clignancourt-Championnet, Michelet-Institut d'Art et d'Archéologie, Serpente-Maison de la Recherche, and Institut des Etudes Ibériques. Other academic libraries include Interuniversity Pharmaceutical Library, Leonardo da Vinci University Library, Paris School of Mines Library, and the René Descartes University Library.
Document 13: Black Diamond (library): The Black Diamond (Danish: Den Sorte Diamant) is a modern waterfront extension to the Royal Danish Library's old building on Slotsholmen in central Copenhagen, Denmark. Its quasi-official nickname is a reference to its polished black granite cladding and irregular angles. Designed by Danish architects Schmidt Hammer Lassen, the Black Diamond was completed in 1999 as the first in a series of large-scale cultural buildings along Copenhagen's waterfront.
Document 14: University of Chicago: Notable faculty in physics have included the speed of light calculator A. A. Michelson, elementary charge calculator Robert A. Millikan, discoverer of the Compton Effect Arthur H. Compton, the creator of the first nuclear reactor Enrico Fermi, "the father of the hydrogen bomb" Edward Teller, "one of the most brilliant and productive experimental physicists of the twentieth century" Luis Walter Alvarez, Murray Gell-Mann who introduced the quark, second female Nobel laureate Maria Goeppert-Mayer, the youngest American winner of the Nobel Prize Tsung-Dao Lee, and astrophysicist Subrahmanyan Chandrasekhar.
Document 15: Uppsala University Library: The Uppsala University Library () at Uppsala University in Uppsala, Sweden, consists of 11 subject libraries, one of which is housed in the old main library building, Carolina Rediviva. The library holds books and periodicals, manuscripts, musical scores, pictures and maps.
ground_truth: Copenhagen University Library
sub_queries: The college Niels Bohr attended was what? Answer: University of Copenhagen
University of Copenhagen >> has part Answer: Copenhagen University Library