Question: What is the enrollment at Rogier Windhorst's employer?

full_context: Document 1: 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.
Document 2: 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 3: University of California, Los Angeles: The University of California, Los Angeles (UCLA) is a public research university in Los Angeles. It became the Southern Branch of the University of California in 1919, making it the fourth-oldest (after UC Berkeley, UC San Francisco, and UC Davis) of the 10-campus University of California system. It offers 337 undergraduate and graduate degree programs in a wide range of disciplines. UCLA enrolls about 31,000 undergraduate and 13,000 graduate students and had 119,000 applicants for Fall 2016, including transfer applicants, making the school the most applied-to of any American university.The university is organized into six undergraduate colleges, seven professional schools, and four professional health science schools. The undergraduate colleges are the College of Letters and Science; Samueli School of Engineering; School of the Arts and Architecture; Herb Alpert School of Music; School of Theater, Film and Television; and School of Nursing.
Document 4: Arizona State University: ASU is one of the largest public universities by enrollment in the U.S. It had approximately 72,000 students enrolled in fall 2016, including nearly 59,000 undergraduate and more than 13,000 graduate students. ASU's charter, approved by the board of regents in 2014, is based on the ``New American University ''model created by ASU President Crow. It defines ASU as`` a comprehensive public research university, measured not by whom it excludes, but rather by whom it includes and how they succeed; advancing research and discovery of public value; and assuming fundamental responsibility for the economic, social, cultural and overall health of the communities it serves.''
Document 5: Steven J. Dick: Steven J. Dick received a Bachelor of Science in astrophysics from Indiana University in 1971. In 1977, he earned a Master of Arts and a Ph.D. in the history and philosophy of science. For 24 years, Dick worked as an astronomer and historian of science for United States Naval Observatory in Washington, D.C., including three years at the Naval Observatory's Southern Hemisphere station in New Zealand. There he was part of a team using transit telescopes and astrographs to chart the northern and southern skies. During this time, he also wrote the history of the Observatory, the first national observatory of the United States, published as "Sky and Ocean Joined: The U. S. Naval Observatory, 1830-2000".
Document 6: Valdosta State University: Valdosta State University, also referred to as VSU, or Valdosta State, is an American public university and is one of the four comprehensive universities in the University System of Georgia. Valdosta State is located on a campus at the heart of the city of Valdosta. VSU serves over 11,000 undergraduate and graduate students representing 157 Georgia counties, all 50 states, Puerto Rico, the United States Virgin Islands, American Samoa and Washington, D.C. and hosts over 300 international students from 76 countries. VSU also offers classes at Moody Air Force Base north of Valdosta in Lowndes County.
Document 7: Miguel Itzigsohn: Itzigsohn was a professor of spherical and practical astronomy. From 1955 to 1972, he was director of the extrameridian astronomy department at the La Plata Astronomical Observatory, specializing in astrometry and celestial mechanics. He was responsible for the surge in observational and computational activity in studies of minor planets in Argentina following World War II.
Document 8: Fred Adams: Fred Adams is the Ta-You Wu Collegiate Professor of Physics at the University of Michigan, where his main field of research is astrophysics theory focusing on star formation, planet formation, and dynamics. His seminal work on the radiative signature of star formation has provided a foundation for further studies in star formation. In more recent years, he has studied the formation and evolution of planetary systems, including the effect of the stellar birth cluster environment.
Document 9: List of United States public university campuses by enrollment: Ten largest public university campuses by enrollment during the 2017 -- 18 academic year Ranking University Location Enrollment Reference (s) Texas A&M University College Station, Texas 68,603 University of Central Florida Orlando, Florida 66,180 Ohio State University Columbus, Ohio 59,837 Florida International University Miami, Florida 56,851 5 University of Florida Gainesville, Florida 52,367 6 University of Minnesota Minneapolis / Saint Paul, Minnesota 51,848 7 University of Texas at Austin Austin, Texas 51,525 8 Arizona State University Tempe, Arizona 51,164 9 Michigan State University East Lansing, Michigan 50,019 10 Indiana University Bloomington, Indiana 49,695
Document 10: North Carolina: In 1795, North Carolina opened the first public university in the United States—the University of North Carolina (now named the University of North Carolina at Chapel Hill). More than 200 years later, the University of North Carolina system encompasses 17 public universities including North Carolina State University, North Carolina A&T State University, North Carolina Central University, the University of North Carolina at Chapel Hill, the University of North Carolina at Greensboro, East Carolina University, Western Carolina University, Winston-Salem State University, the University of North Carolina at Asheville, the University of North Carolina at Charlotte, the University of North Carolina at Pembroke, UNC Wilmington, Elizabeth City State University, Appalachian State University, Fayetteville State University, and UNC School of the Arts, and . Along with its public universities, North Carolina has 58 public community colleges in its community college system.The largest university in North Carolina is currently North Carolina State University, with more than 34,000 students. North Carolina is home to many excellent universities as well as dozens of community colleges and private universities.
Document 11: Astronomer: The number of professional astronomers in the United States is actually quite small. The American Astronomical Society, which is the major organization of professional astronomers in North America, has approximately 7,000 members. This number includes scientists from other fields such as physics, geology, and engineering, whose research interests are closely related to astronomy. The International Astronomical Union comprises almost 10,145 members from 70 different countries who are involved in astronomical research at the Ph. D. level and beyond.
Document 12: Rogier Windhorst: Rogier Arnold Windhorst (born 1955) is an astronomer and a professor of physics and astronomy at Arizona State University. He received his Ph.D in astronomy in 1984 from the University of Leiden and did post doctorate work at Mt.Wilson and Las Campanas Observatories. He currently serves as associate chair at Arizona State and is among six Arizona state faculty who were awarded Regents Professor appointments in 2006; he presides over the School of Earth and Space Exploration at the university. In 2008, he became Foundation Professor of Astrophysics at Arizona State University and Co-Director of the ASU Cosmology Initiative.
Document 13: List of United States public university campuses by enrollment: Ten largest public university campuses by enrollment during the 2016 -- 17 academic year Ranking University Location Enrollment Reference (s) University of Central Florida Orlando, Florida 64,335 Texas A&M University College Station, Texas 60,435 Ohio State University Columbus, Ohio 59,482 Florida International University Miami, Florida 55,111 5 University of Florida Gainesville, Florida 52,367 6 Arizona State University Tempe, Arizona 51,869 7 University of Minnesota Minneapolis / Saint Paul, Minnesota 51,580 8 University of Texas at Austin Austin, Texas 51,331 9 Michigan State University East Lansing, Michigan 50,344 10 Indiana University Bloomington, Indiana 49,695
Document 14: San Jose, California: San Jose is home to several colleges and universities. The largest is San Jose State University, which was founded by the California legislature in 1862 as the California State Normal School, and is the founding campus of the California State University (CSU) system. Located in downtown San Jose since 1870, the university enrolls approximately 30,000 students in over 130 different bachelor's and master's degree programs. The school enjoys a good academic reputation, especially in the fields of engineering, business, art and design, and journalism, and consistently ranks among the top public universities in the western region of the United States. San Jose State is one of only three Bay Area schools that fields a Football Bowl Subdivision (FBS) Division I college football team; Stanford University and U.C. Berkeley are the other two.
Document 15: Claude R. Canizares: Claude R. Canizares stepped down June 30, 2015 from his post as Vice President of MIT. He remains the Bruno Rossi Professor of Physics at MIT and associate director for MIT of the Chandra X-Ray Observatory Center. He is on sabbatical for the 2015-2016 school year.
ground_truth: 72,000
sub_queries: Rogier Windhorst >> employer Answer: Arizona State University
what is the enrollment at Arizona State University Answer: 72,000