Question: Where does Paul Horwich's employer rank among the world's best colleges and universities?

full_context: Document 1: Richard W. Miller: Richard W. Miller is a political philosopher and the Wyn and William Y. Hutchinson Professor in Ethics and Public Life at Cornell University. He is also the Director of the Program on Ethics and Public Life in the Cornell University Department of Philosophy. Miller received his Ph.D. from Harvard University in 1975. His dissertation, "Solipsism and Language in the Writings of Wittgenstein," was directed by Rogers Albritton and Hilary Putnam. While he currently specializes in social and political philosophy, Miller has published books and articles on epistemology, philosophy of science, and ethics. His most recent book is "Globalizing Justice: The Ethics of Poverty and power".
Document 2: Philip Ehrlich: Philip Ehrlich is Professor at Department of Philosophy of Ohio University. His main areas of interest are Logic, History of Mathematics, and Philosophy of Science.
Document 3: London: London is a major global centre of higher education teaching and research and its 43 universities form the largest concentration of higher education institutes in Europe. According to the QS World University Rankings 2015/16, London has the greatest concentration of top class universities in the world and the international student population around 110,000 which is also more than any other city in the world. A 2014 PricewaterhouseCoopers report termed London as the global capital of higher education
Document 4: London: London is home to five major medical schools – Barts and The London School of Medicine and Dentistry (part of Queen Mary), King's College London School of Medicine (the largest medical school in Europe), Imperial College School of Medicine, UCL Medical School and St George's, University of London – and has a large number of affiliated teaching hospitals. It is also a major centre for biomedical research, and three of the UK's five academic health science centres are based in the city – Imperial College Healthcare, King's Health Partners and UCL Partners (the largest such centre in Europe).
Document 5: Stephen Darwall: A 1968 graduate of Yale University, he earned his PhD in Philosophy at the University of Pittsburgh under Kurt Baier in 1972. He began his teaching career at the University of North Carolina, Chapel Hill in 1972, and then joined the Department of Philosophy at the University of Michigan philosophy department, where he is, since 2006, John Dewey Distinguished University Professor Emeritus. He has been a fellow of the American Academy of Arts and Sciences since 2001. He and David Velleman are founding co-editors of "Philosophers' Imprint". He specializes in the foundations and history of ethics.
Document 6: Ernst Ruh: Ernst Ruh received his doctorate in 1964 from Brown University under Katsumi Nomizu with thesis "On the Automorphism Groups of a G-structure". He is a professor at Ohio State University and a professor of computer science at the University of Basel (1987/89). In 1990 Ruh became a full professor (professor ordinarius) of mathematics at the University of Fribourg; he was the successor of Josef Schmid. In 2006 he retired as professor emeritus.
Document 7: Paul Levinson: Paul Levinson graduated from Christopher Columbus High School in the Bronx, attended the City College of New York (CCNY) in the 1960s, and received a BA in journalism from New York University in 1975; an MA in Media Studies from The New School in 1976; and a PhD from New York University in media ecology in 1979. His doctoral dissertation, "Human Replay: A Theory of the Evolution of Media" (1979), was mentored by Neil Postman.
Document 8: London: A number of universities in London are outside the University of London system, including Brunel University, City University London, Imperial College London, Kingston University, London Metropolitan University, Middlesex University, University of East London, University of West London and University of Westminster, (with over 34,000 students, the largest unitary university in London), London South Bank University, Middlesex University, University of the Arts London (the largest university of art, design, fashion, communication and the performing arts in Europe), University of East London, the University of West London and the University of Westminster. In addition there are three international universities in London – Regent's University London, Richmond, The American International University in London and Schiller International University.
Document 9: London: With 120,000 students in London, the federal University of London is the largest contact teaching university in the UK. It includes four large multi-faculty universities – King's College London, Queen Mary, Royal Holloway and UCL – and a number of smaller and more specialised institutions including Birkbeck, the Courtauld Institute of Art, Goldsmiths, Guildhall School of Music and Drama, the Institute of Education, the London Business School, the London School of Economics, the London School of Hygiene & Tropical Medicine, the Royal Academy of Music, the Central School of Speech and Drama, the Royal Veterinary College and the School of Oriental and African Studies. Members of the University of London have their own admissions procedures, and some award their own degrees.
Document 10: London: A number of world-leading education institutions are based in London. In the 2014/15 QS World University Rankings, Imperial College London is ranked joint 2nd in the world (alongside The University of Cambridge), University College London (UCL) is ranked 5th, and King's College London (KCL) is ranked 16th. The London School of Economics has been described as the world's leading social science institution for both teaching and research. The London Business School is considered one of the world's leading business schools and in 2015 its MBA programme was ranked second best in the world by the Financial Times.
Document 11: London School of Economics: LSE is located in Westminster, central London, near the boundary between Covent Garden and Holborn. The area is historically known as Clare Market. The LSE has more than 10,000 students and 3,300 staff, just under half of whom come from outside the UK. It had a consolidated income of £340.7 million in 2015 / 16, of which £30.3 million was from research grants. One hundred and fifty five nationalities are represented amongst LSE's student body and the school has the highest percentage of international students (70%) of all British universities. Despite its name, the school is organised into 25 academic departments and institutes which conduct teaching and research across a range of legal studies and social sciences.
Document 12: Brosl Hasslacher: Brosl Hasslacher obtained a bachelor's in physics from Harvard University in 1962. He did his Ph.D. with D.Z. Freeman and C.N. Yang at the State University of New York at Stony Brook. After having several postdoctoral and research positions at Institute for Advanced Study in Princeton, New Jersey, Caltech, ENS in Paris, and CERN, he settled for more than twenty years at the Theoretical Division of the Los Alamos National Laboratory. There he was involved in theoretical, experimental, and numerical work in theoretical physics, high-energy physics, nonlinear dynamics, fluid dynamics, nanotechnology, and robotics.
Document 13: Krzysztof Michalski: Krzysztof Michalski was born in Warsaw. He studied philosophy at the University of Warsaw, where he received his Ph.D. in 1974 with a thesis on "Heidegger and Contemporary Philosophy". In 1977, he spent one year in Germany as a Humboldt Fellow, from 1978 onwards he taught philosophy at the University of Warsaw. In 1981/82 he was a Thyssen Fellow at the Heidelberg University and in 1982/1983 a Fellow Commoner of Churchill College at Cambridge. In 1986, he was habilitated for Philosophy at the University of Warsaw with the study "Logic and Time". Since 1986, Michalski has been teaching philosophy at Boston University, since 1994 also at the University of Warsaw.
Document 14: London: There are a number of business schools in London, including the London School of Business and Finance, Cass Business School (part of City University London), Hult International Business School, ESCP Europe, European Business School London, Imperial College Business School and the London Business School. London is also home to many specialist arts education institutions, including the Academy of Live and Recorded Arts, Central School of Ballet, LAMDA, London College of Contemporary Arts (LCCA), London Contemporary Dance School, National Centre for Circus Arts, RADA, Rambert School of Ballet and Contemporary Dance, the Royal College of Art, the Royal College of Music and Trinity Laban.
Document 15: Paul Horwich: Horwich earned his PhD from Cornell University, where his thesis advisor was Richard Boyd (title of the doctoral thesis: "The Metric and Topology of Time"). He has previously taught at MIT, University College London, and CUNY Graduate Center.
ground_truth: 5th
sub_queries: Paul Horwich >> employer Answer: University College London
Where is University College London , or UCL, ranked among the world's best colleges and universities? Answer: 5th