Question: In addition to the Honorary President of the Institute for Jewish Policy Research, who else backs Viagogo?

Context paragraphs:
National Education Policy Center: The National Education Policy Center (NEPC) is a non-profit education policy research center located in the School of Education at the University of Colorado at Boulder.  It was founded in 2010 and is funded by a variety of governmental organizations, NGOs, and foundations.  The Center’s publications are intended for a broad audience that includes academic experts, policy makers, the media, and the general public.  The Center's goal is to provide high quality information in support of democratic deliberation about education policy.  Among its projects are the Think Tank Review project, the Commercialism in Education Research Unit, and the open access journal "Education Review".  The Center sponsors research, produces policy briefs, and publishes expert third party reviews of think tank reports.  NEPC will house a new Initiative on Diversity, Equity, and Learning (IDEAL), which is funded by the Ford Foundation.  NEPC is also the home of the Education Policy Alliance, a nationwide network of university-based research centers and organizations engaged in education policy research.

Jacob Rothschild, 4th Baron Rothschild: Nathaniel Charles Jacob Rothschild, 4th Baron Rothschild, {'1': ", '2': ", '3': ", '4': "} (born 29 April 1936) is a British investment banker and a member of the prominent Rothschild banking family.  He is also Honorary President of the Institute for Jewish Policy Research.

Heidi Hartmann: Heidi Hartmann is a feminist economist who is founder and president of the Washington-based Institute for Women's Policy Research (IWPR), a research organization created to conduct women-centered, public policy research.  She is an expert on the intersection of women, economics and public policy.  Dr. Hartmann is also a Research Professor at George Washington University and the editor of the "Journal of Women, Politics & Policy".

Antony Lerman: Antony Lerman (born 11 March 1946) is a British writer who specialises in the study of antisemitism, the Israeli-Palestinian conflict, multiculturalism, and the place of religion in society.  From 2006 to early 2009, he was Director of the Institute for Jewish Policy Research, a think tank on issues affecting Jewish communities in Europe.  From December 1999 to 2006, he was Chief Executive of the Hanadiv Charitable Foundation, renamed the Rothschild Foundation Europe in 2007.  He is a founding member of the Jewish Forum for Justice and Human Rights, and a former editor of "Patterns of Prejudice", a quarterly academic journal focusing on the sociology of race and ethnicity.

Mathematica Policy Research: Mathematica Policy Research is a policy research organization with offices in Princeton, New Jersey; Cambridge, Massachusetts; Chicago, Illinois; Washington, DC; Ann Arbor, Michigan; and Oakland, California.  Mathematica has more than 1,000 employees and conducts program evaluation, policy research and interpretation, survey design and data collection, and performance measurement and data management.  Mathematica works across the United States and in countries around the world for clients that include federal agencies, state and local governments, foundations, universities, and private-sector and international groups.

Berman Jewish Policy Archive: The Berman Jewish Policy Archive (BJPA), housed at the Graduate School of Education at Stanford University is a centralized electronic database of Jewish communal policy research.  Its collection contains more than 20,000 documents, with holdings spanning from 1900 until today.  It also is connected to the Jewish Survey Question Bank, a freely available repository of survey tools and questionnaires.  The BJPA partners with the North American Jewish Data Bank; together they source the largest publicly available collection of Jewish policy research.  The BJPA was established through the Mandell L. and Madeleine H. Berman Foundation, the Charles H. Revson Foundation, and continued with support from the Jim Joseph Foundation.

Keith Kahn-Harris: Keith Kahn-Harris is a scholar in the new field of heavy metal studies, working as a writer, sociologist, lecturer, salonist, and music critic.  He is an honorary research fellow and associate lecturer at Birkbeck College and an associate fellow of the Institute for Jewish Policy Research and a lecturer at Leo Baeck College.  He is a regular reviewer for a number of scholarly journals, including "Sociology", "Sociological Research Online", "Journal of Contemporary Religion", "European Journal of Cultural Studies", and "Popular Music History".

Viagogo: Viagogo is an online ticket marketplace for ticket resale (also called "scalping" or "touting").  The company, which was founded in London in 2006, has a network of more than 60 global websites with customers in 160 countries.  Viagogo is backed by the venture capital investment firm Index Ventures as well as Brent Hoberman, the co-founder and former CEO of Lastminute.com and Lord Jacob Rothschild via his family interests.  They have faced criticism for inflating ticket prices.

New Jersey Policy Research Organization: New Jersey Policy Research Organization or NJPRO is a policy research foundation located in Trenton, New Jersey and an independent affiliate of the New Jersey Business & Industry Association (NJBIA).  As a leading research organization for the state, the NJPRO Foundation conducts innovative, timely and practical research on issues of importance to New Jersey employers.  Working with diverse interests, NJPRO sponsors and supports research in New Jersey through both public and private policy research institutes, universities, colleges and individuals.

Institute for Jewish Policy Research: The Institute for Jewish Policy Research (JPR), founded as the "Institute of Jewish Affairs", is a London-based research institute and think tank.  It specializes in contemporary Jewish affairs, with a particular focus on Jews in Britain and across Europe.  It is responsible for most of the recent data that exist on Jews in Britain, and its most significant recent reports include a study of Jews in Britain based on the 2001 UK Census data, an analysis of the attitudes of Jews in Britain towards Israel, an extensive study of child poverty and deprivation in the British Jewish community and the first National Jewish Student Survey.  Its recent think-tank activities have included "Res Publica: The European Common Good," and "New Conceptions of Community."  JPR also runs a public education programme, and has hosted lectures from a range of leading international thinkers including Chief Rabbi Lord Sacks, James Wolfenson, Professor Jonathan Sarna and Professor Zygmunt Bauman.

Supporting paragraphs: Viagogo Jacob Rothschild, 4th Baron Rothschild
Answer: Brent Hoberman