Question: What is the ranking of the school that employs Mark Ronan, among the world's best colleges and universities?

full_context: Document 1: 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 2: 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 3: Mark Ronan: Mark Andrew Ronan (born 1947) is Emeritus Professor of Mathematics at the University of Illinois at Chicago and Honorary Professor of Mathematics at University College London. He has lived and taught in: Germany (at the University of Braunschweig and the Free University of Berlin); in England, where from 1989 to 1992 he was Mason Professor of Mathematics at the University of Birmingham; and America at the University of Illinois at Chicago, where his teaching included courses on ancient literature from Mesopotamia, and on the history of the calendar, as well as mathematics.
Document 4: 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 5: Bruno Meissner: From 1904 to 1921 Meissner was professor at the University of Breslau, then from 1921 professor of assyriology at the University of Berlin. His main work on Babylonian and Assyrian cuneiform texts appeared in 1920 and 1925 in two volumes. He also authored a major text with Dietrich Opitz on the palace of Nineveh.
Document 6: Ronald Inden: Ronald Inden is an American Indologist, and professor emeritus in the Departments of History and of South Asian Languages and Civilizations at the University of Chicago and is a major scholar in South Asian and post-colonial studies. Inden has been a lifelong resident of Hyde Park, the Chicago community which contains the University.
Document 7: 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 8: Imperial College London: Furthermore, in terms of job prospects, as of 2014 the average starting salary of an Imperial graduate was the highest of any UK university. In terms of specific course salaries, the Sunday Times ranked Computing graduates from Imperial as earning the second highest average starting salary in the UK after graduation, over all universities and courses. In 2012, the New York Times ranked Imperial College as one of the top 10 most-welcomed universities by the global job market. In May 2014, the university was voted highest in the UK for Job Prospects by students voting in the Whatuni Student Choice Awards Imperial is jointly ranked as the 3rd best university in the UK for the quality of graduates according to recruiters from the UK's major companies.
Document 9: History of mathematics: Babylonian mathematics refers to any mathematics of the peoples of Mesopotamia (modern Iraq) from the days of the early Sumerians through the Hellenistic period almost to the dawn of Christianity. The majority of Babylonian mathematical work comes from two widely separated periods: The first few hundred years of the second millennium BC (Old Babylonian period), and the last few centuries of the first millennium BC (Seleucid period). It is named Babylonian mathematics due to the central role of Babylon as a place of study. Later under the Arab Empire, Mesopotamia, especially Baghdad, once again became an important center of study for Islamic mathematics.
Document 10: Brian Butterworth: Brian Butterworth FBA (born 3 January 1944) is emeritus professor of cognitive neuropsychology in the Institute of Cognitive Neuroscience at University College London. His research has ranged from speech errors and pauses, short-term memory deficits, dyslexia, reading both in alphabetic scripts and Chinese, and mathematics and dyscalculia. His book "The Mathematical Brain" has been translated into four languages. He was Editor-in-Chief of "Linguistics" (1978–1983) and a founding editor of the journals "Language and Cognitive Processes" and "Mathematical Cognition". He is a Fellow of the British Academy.
Document 11: Michael Angold: Michael Angold was educated at the University of Oxford (BA, D.Phil.). He has worked at the University of Edinburgh from 1970, serving as professor of Byzantine history from 1996 until 2005, when he was appointed professor emeritus.
Document 12: 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 13: 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 14: 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 15: Henry Roy Brahana: H. Roy Brahana received his PhD from Princeton University in 1920 under the direction of Oswald Veblen. In the autumn of 1920, he joined the mathematics department of the University of Illinois at Urbana-Champaign and remained there until his retirement in 1963. Brahana was the editor for the publication by the University of Illinois Press of the collected works of George Abram Miller in 5 volumes, coming out in the years 1935, 1939, 1946, 1955, and 1959. The H. Roy Brahana Prize for undergraduates at U. of Illinois at Urbana-Champaign was established in his honor.
ground_truth: 5th
sub_queries: Mark Ronan >> employer Answer: University College London
Where is University College London , or UCL, ranked among the world's best colleges and universities? Answer: 5th