Question: What institute in Washington D.C. is Bryan Douglas Caplan an adjunct scholar for?

full_context: Document 1: Independent Institute: The Independent Institute is an American think tank based in Oakland, California. Its stated mission is "to boldly advance peaceful, prosperous, and free societies, grounded in a commitment to human worth and dignity." Founded in 1986 by David J. Theroux, the Institute focuses on political, social, economic, legal, environmental and foreign policy issues. It has more than 140 research fellows. The Institute was originally established in San Francisco, was re-located in 1989 to Oakland, and since 2006, has had an office in Washington, D.C. The Institute is organized into seven centers addressing a range of issues. According to the "2014 Global Go To Think Tank Index Report" (Think Tanks and Civil Societies Program, University of Pennsylvania), the Institute is ranked number 54 (of 60) in the "Top Think Tanks in the United States".
Document 2: Robert P. Murphy: Robert Patrick Murphy (born 23 May 1976) is an American economist, consultant and author. He is an economist with the Institute for Energy Research (IER) specializing in climate change and a research fellow with the Independent Institute, He was a senior fellow in business and economic studies at the Pacific Research Institute, and he is an associated scholar at the Ludwig von Mises Institute. In addition to economic subjects, Murphy writes about, and has presented an online video class in, anarcho-capitalism on the Mises Institute website. Murphy is also noteworthy, and has been criticized by economists Brad DeLong and Paul Krugman for, repeatedly predicting that the quantitative easing practiced by the Federal Reserve in the late 2000s would create double-digit inflation—predictions that did not come to fruition. Murphy is a Christian, and has written articles expressing support for a literal interpretation of the Bible and skepticism of evolutionary theory.
Document 3: Mason Gaffney: Mason Gaffney (born October 18, 1923) is an American economist and a major critic of Neoclassical economics from a Georgist point of view. He earned his B.A. in 1948 from Reed College in Portland, Oregon. Gaffney first read Henry George's masterwork "Progress and Poverty" as a high school junior. After serving in the southwest Pacific during World War II, this interest led him in 1956 to get a Ph.D. in Economics at the University of California, Berkeley. There he addressed his teachers' skepticism about Georgism with a dissertation entitled "Land Speculation as an Obstacle to Ideal Allocation of Land." Gaffney has been Professor of Economics at the University of California, Riverside since 1976.
Document 4: Robert A. Levy: Robert A. Levy (born 1941 in Washington, DC) is the chairman of the libertarian Cato Institute and the organizer and financier behind "District of Columbia v. Heller", the Supreme Court Case that established the Second Amendment as affirming an individual right to gun ownership. He is a Cato senior fellow and an author and pundit. Before becoming a lawyer, he was the founder and CEO of CDA Investment Technologies.
Document 5: Bryan Caplan: Bryan Douglas Caplan (born April 8, 1971) is an American economist. Caplan is a professor of economics at George Mason University, research fellow at the Mercatus Center, adjunct scholar at the Cato Institute, and frequent contributor to Freakonomics as well as publishing his own blog, EconLog. He is a self-publicized economic libertarian. The bulk of Caplan's academic work is in public economics, especially public choice theory.
Document 6: Center for Libertarian Studies: The Center for Libertarian Studies (CLS) was a libertarian and anarcho-capitalist oriented educational organization founded in 1976 by Murray Rothbard and Burton Blumert, which grew out of the Libertarian Scholars Conferences. It published the "Journal of Libertarian Studies" from 1977 to 2000 (now published by the Ludwig von Mises Institute), a newsletter ("In Pursuit of Liberty"), several monographs, and sponsors conferences, seminars, and symposia.
Document 7: Murray Rothbard: Murray Newton Rothbard ( ; March 2, 1926 – January 7, 1995) was an American economist, philosopher, political theorist, and historian. He was a heterodox economist of the Austrian School, a historian, and a political theorist whose writings and personal influence played a seminal role in the development of modern libertarianism. Rothbard was the founder and leading theoretician of anarcho-capitalism, a staunch advocate of historical revisionism, and a central figure in the twentieth-century American libertarian movement. He wrote over twenty books on political theory, revisionist history, economics, and other subjects. Rothbard asserted that all services provided by the "monopoly system of the corporate state" could be provided more efficiently by the private sector and wrote that the state is "the organization of robbery systematized and writ large." He called fractional-reserve banking a form of fraud and opposed central banking. He categorically opposed all military, political, and economic interventionism in the affairs of other nations. According to his protégé Hans-Hermann Hoppe, "There would be no anarcho-capitalist movement to speak of without Rothbard."
Document 8: Radicals for Capitalism: Radicals for Capitalism: A Freewheeling History of the Modern American Libertarian Movement is a 2007 book about the history of libertarianism in the 20th century by American journalist and "Reason" senior editor Brian Doherty. He traces the evolution of the movement, as well as the life stories of Ayn Rand, Milton Friedman, Ludwig von Mises, F. A. Hayek, and Murray Rothbard, and details how they intertwined.
Document 9: Ludwig von Mises Institute: The Ludwig von Mises Institute (LvMI), often referred to as the Mises Institute, is a tax-exempt organization located in Auburn, Alabama, United States. It is named after Austrian School economist Ludwig von Mises (1881–1973). Its website states that it exists to promote "teaching and research in the Austrian school of economics, and individual freedom, honest history, and international peace, in the tradition of Ludwig von Mises and Murray N. Rothbard."
Document 10: Fred C. Koch: Fred Chase Koch ( ; September 23, 1900 – November 17, 1967) was an American chemical engineer and entrepreneur who founded the oil refinery firm that later became Koch Industries, a privately held company which, under the principal ownership and leadership of Koch's sons, Charles and David, is listed by "Forbes," as of 2015, as the second-largest privately held company in the United States.
Document 11: David E. Spencer: David E. Spencer is a retired professor of economics at Brigham Young University. He taught and did research in macroeconomics, econometrics, and montetary theory. He is the author of eighteen peer-reviewed publications including Econometrica, the American Economic Review, the Review of Economics and Statistics and the Journal of Money, Credit and Banking. Spencer is a founding member of the BYU Macroeconomics and Computational Lab. In addition to teaching various economics classes, Spencer also taught American Heritage at BYU for several years.
Document 12: Arnold Kling: Arnold Kling (born 1954) is an American economist, scholar, and blogger known for his writings on EconLog, an economics blog, along with Bryan Caplan and David R. Henderson. Kling now has his own blog, askblog which sports the motto: "taking the most charitable views of those who disagree." The "ask" in askblog apparently stands for "Arnold S. Kling." He is an Adjunct Scholar for the Cato Institute and is affiliated with the Mercatus Center.
Document 13: Kevin Hassett: Kevin Allen Hassett is an American economist and the Chair of the Council of Economic Advisers. He is known for his work on tax policy and for coauthoring the book "Dow 36,000", published in 1999. Prior to becoming Chair of the Council of Economic Advisers, Hassett was the State Farm James Q. Wilson Chair in American Politics and Culture and Director of Research for Domestic Policy at the American Enterprise Institute, a conservative think tank. He was John McCain's chief economic adviser in the 2000 presidential primaries and an economic adviser to the campaigns of George W. Bush in the 2004 presidential election and McCain in the presidential election of 2008. He was among Mitt Romney's economic advisers for the 2012 presidential campaign.
Document 14: Cato Institute: The Cato Institute is an American libertarian think tank headquartered in Washington, D.C. It was founded as the Charles Koch Foundation in 1974 by Ed Crane, Murray Rothbard, and Charles Koch, chairman of the board and chief executive officer of the conglomerate Koch Industries. In July 1976, the name was changed to the Cato Institute.
Document 15: Jeffrey MacKie-Mason: Jeff MacKie-Mason is an American economist specializing in information, incentive-centered design and public policy. MacKie-Mason is the University Librarian and Chief Digital Scholarship Officer of the University of California, Berkeley, where he is also a Professor in the School of Information and a Professor of Economics. He was the Arthur W. Burks Collegiate Professor of Information and Computer Science at the School of Information and was a Professor of Economics in the Department of Economics at the University of Michigan and was a Professor of Public Policy at the Gerald R. Ford School of Public Policy. MacKie-Mason was the founding director of STIET, a research program for Socio-Technical Infrastructure for Electronic Transactions funded by the National Science Foundation bridging together over 60 faculty and doctoral students in economics and computer science research.
ground_truth: Cato Institute