Question: A senior fellow in governance studies at the Brookings Institution and a contributing editor of "The Atlantic" worked with a certain journal that is a research and advisory services company based in Washington, D.C. offering services in government affairs, advocacy communications and policy brands research, who is the President of this company?

full_context: Document 1: National Journal: National Journal is a research and advisory services company based in Washington, D.C. offering services in government affairs, advocacy communications and policy brands research for government and business leaders. It publishes daily journalism covering politics and public policy and is led by President Kevin Turpin and Editor-in-Chief Stephen G. Smith.
Document 2: Politics and Policy: Politics and Policy is a peer-reviewed academic journal published six times a year by Wiley-Blackwell on behalf of the Policy Studies Organization, the Universidad Iberoamericana, Mexico City, the Alabama Political Science Association, the British Columbia Political Studies Association, the Georgia Political Science Association, the Great Plains Political Science Association, the Louisiana Political Science Association, the Mississippi Political Science Association, the New York State Political Science Association, the North Carolina Political Science Association, the Ohio Association of Economists and Political Scientists, and The Roosevelt Institution. The journal was established in 1973 and the current editors-in-chief are Emma R. Norman (University of the Americas Puebla) and David Mena (Universidad Iberoamericana). The journal publishes articles on public policy, political science, political history, political sociology, public administration, and international relations.
Document 3: Niharika Acharya: Niharika Acharya is the Editorial Director at National Journal, an Atlantic Media company. Prior to joining the National Journal, she was a freelance producer at Fox TV. Niharika worked at Bloomberg TV from 2010 to 2014, she was the Producer of Bloomberg Television's flagship political show, "Political Capital with Al Hunt", a political show with an economic edge. The show features discussions on national and international news, along with a weekly wrap-up and interviews with key political figures.
Document 4: City &amp; State: City & State is a political journalism organization based in New York City. The company publishes a weekly magazine covering politics and government in New York City and New York State that is distributed to New York State legislators, county executives, municipalities, the New York Congressional delegation, New York City Council members and others leaders in New York business and government. After years of publishing a twice-monthly print edition, "City & State" has announced plans to switch to a weekly in January 2016. "City & State" also publishes on their website and sends out a free First Read daily email. In May 2016 the company also launched a monthly magazine based in Philadelphia and a website.
Document 5: Reihan Salam: Reihan Morshed Salam ( ; born 29 December 1979) is a conservative American political commentator, columnist, and author. He is the executive editor of "National Review" and a columnist for "Slate", as well as a contributing editor at "National Affairs", an interviewer for VICE, and a fellow at the University of Chicago Institute of Politics. He has appeared on a number of radio and television shows, including NPR's "Morning Edition, Talk of the Nation, All Things Considered", and "Tell Me More", on HBO's "Real Time with Bill Maher", NBCUniversal's "The Chris Matthews Show", WNYC's "The Brian Lehrer Show", BBC's "Newsnight", ABC's "This Week", CNN's "Fareed Zakaria GPS", Comedy Central's "The Colbert Report", American Public Media's "Marketplace, and Fox News' Tucker Carlson Tonight".
Document 6: The Washington Examiner: The Washington Examiner is an American political journalism website and weekly magazine based in Washington, D.C. that covers politics and policy in the United States and internationally. It is owned by MediaDC, a subsidiary of Clarity Media Group, which is owned by Philip Anschutz.
Document 7: Jonathan Alter: Jonathan Alter (born October 6, 1957) is a liberal / progressive American journalist, best-selling author, and television producer who was a columnist and senior editor for "Newsweek" magazine from 1983 until 2011, and has written three "New York Times" best-selling books about American presidents. He is a contributing correspondent to NBC News, where since 1996 he has appeared on NBC, MSNBC, and CNBC. Alter was one of the first magazine or newspaper reporters to appear on MSNBC. When the shows were on the air, he could often be heard on "Imus in the Morning" and "The Al Franken Show" on Air America Radio. Alter is currently an executive producer on the Amazon Studio's production "Alpha House", which stars John Goodman, Mark Consuelos, Clark Johnson, and Matt Malloy.
Document 8: Ezra Klein: Ezra Klein (born May 9, 1984) is an American journalist, blogger, and political commentator who currently serves as editor-at-large of "Vox". He was previously a blogger and columnist for "The Washington Post" and an associate editor of "The American Prospect". He has served as a contributor to Bloomberg News and MSNBC.
Document 9: E. J. Dionne: Eugene Joseph Dionne Jr. ( ; born April 23, 1952), known as E. J. Dionne, is an American journalist and political commentator, and a long-time op-ed columnist for "The Washington Post". He is also a Senior Fellow in Governance Studies at the Brookings Institution, a University Professor in the Foundations of Democracy and Culture at the McCourt School of Public Policy, a Senior Research Fellow at Saint Anselm College, and an NPR, MSNBC, and PBS commentator.
Document 10: Peter Beinart: Peter Alexander Beinart ( ; born 1971) is an American columnist, journalist, and liberal political commentator. A former editor of "The New Republic", he has written for "Time", "The New York Times", "The New York Review of Books" among other periodicals, and is the author of three books. He is associate professor of journalism and political science at City University of New York. He is a senior columnist at "Haaretz" whose views on Israel evoke impassioned controversy. He also is a contributor to "The Atlantic" and "National Journal and" programs on CNN.
Document 11: Charles Murray (political scientist): Charles Alan Murray ( ; born January 8, 1943) is an American Libertarian, political scientist, author, and columnist. His book "Losing Ground: American Social Policy 1950–1980" (1984), which discussed the American welfare system, was widely read and discussed, and influenced subsequent government policy. He became well-known for his controversial book "The Bell Curve" (1994), written with Richard Herrnstein, in which he argues that intelligence is a better predictor than parental socio-economic status or education level of many individual outcomes including income, job performance, pregnancy out of wedlock, and crime, and that social welfare programs and education efforts to improve social outcomes for the disadvantaged are largely wasted.
Document 12: Jonathan Rauch: Jonathan Charles Rauch ( ; born April 26, 1960 in Phoenix, Arizona) is an American author, journalist and activist. After graduating from Yale University, Rauch worked at the "Winston-Salem Journal" in North Carolina, for the "National Journal" magazine, and later for "The Economist" magazine and as a freelance writer. He is currently a senior fellow in governance studies at the Brookings Institution and a contributing editor of "The Atlantic".
Document 13: The Hotline: The Hotline is a daily political briefing published, alongside "National Journal", by Atlantic Media from its headquarters at The Watergate complex in Washington, D.C.. It is currently edited by Scott Bland. "The Hotline" was founded by Doug Bailey and Roger Craver in 1987, and published independently until its acquisition in 1996 by National Journal Group, now a subsidiary of Atlantic Media.
Document 14: Stuart Taylor Jr.: Stuart Taylor Jr. is an American journalist and author. He also served as a Nonresident Senior Fellow in Governance Studies at the Brookings Institution and practices law occasionally. He was a reporter for the Baltimore "Sun" from 1971-1974; "The New York Times" from 1980-1988, covering legal affairs and then the Supreme Court; wrote commentaries and long features for "The American Lawyer", "Legal Times" and their affiliates from 1989-1997, and for "National Journal" and "Newsweek" from 1998 through 2010; and has written on a freelance basis for numerous publications both before and since 2010. He has also coauthored two books and he and a coauthor will soon publish a third.
Document 15: Atlantic Media: Atlantic Media is an American print and online media company owned by David G. Bradley and based in the Watergate in Washington, D.C. The company publishes several prominent news magazines and digital publications including "The Atlantic," "Quartz", "Government Executive", "Defense One" and those belonging to its National Journal Group subsidiary: "National Journal", "The Hotline", "National Journal Daily" (previously known as "Congress Daily"), and "Technology Daily". The National Journal Group also publishes books and directories, the most known of which is the biennial "Almanac of American Politics".
ground_truth: Kevin Turpin