Question: What private Roman Catholic four-year research university did Donald J. Butz attend?

full_context: Document 1: Don Bacon (politician): Donald John Bacon (born August 16, 1963) is a retired United States Air Force Brigadier General and current U.S. Representative for Nebraska's 2nd congressional district.
Document 2: Saint Louis Billikens: The Saint Louis Billikens are the collegiate athletic teams from Saint Louis University of St. Louis, Missouri. The Billikens compete in Division I of the National Collegiate Athletic Association (NCAA) as a member of the Atlantic 10 Conference (where they are the westernmost member, and both the first member located west of the Mississippi and in the Central Time Zone). SLU is heavily rumored to be joining the Big East Conference, which would include more geographically relevant rivals like Creighton (Nebraska), Marquette (Wisconsin), and DePaul (in Chicago). The school has nationally recognized soccer programs for men and women. The school has heavily invested in its on-campus athletic facilities in the past twenty years with the creation of Hermann Stadium and Chaifetz Arena. Chris May is the current director of athletics of the St. Louis Billikens.
Document 3: Billy J. Boles: General Billy Joe Boles (born July 27, 1938) is a retired United States Air Force four-star general. At the time of his retirement, he was Commander of the Air Education and Training Command, a 70,000-person organization, responsible for recruiting, training and educating Air Force personnel. He served for more than three years as the Senior Personnel Officer for the US Air Force, at that time a 700,000-person organization, worldwide. In his early career, Bill served in key leadership positions throughout the Air Force, to include four tours of duty at Air Force headquarters in Washington DC. During his command and staff assignments he had extensive experience in media relations and in presenting Air Force programs to congressional committees.
Document 4: Loyola University New Orleans: Loyola University New Orleans is a private, co-educational, Jesuit university located in New Orleans, Louisiana. Originally established as Loyola College in 1904, the institution was chartered as a university in 1912. It bears the name of the Jesuit founder, Saint Ignatius of Loyola. Loyola is one of 28 member institutions that make up the Association of Jesuit Colleges and Universities and, with its current enrollment of approximately 5000 students, is among the mid-sized Jesuit universities in the United States. Loyola University New Orleans is ranked as the tenth best institution among Southern regional universities offering masters and undergraduate degrees in the 2017 issue of the annual America's Best Colleges issue and guidebook published by "U.S. News & World Report". "The Princeton Review" also features Loyola University New Orleans in the most recent editions of its annual book, "The Best 371 Colleges." In the past, the school has been called "Loyola of the South", "Loyola New Orleans", "Loyola University, New Orleans", and "Loyola University of New Orleans".
Document 5: Donald J. Butz: Donald J. Butz (born 1933 in Nevada City, California) is a retired Major General in the United States Air Force. He graduated from Christian Brothers High School in Sacramento, California before attending Yuba College, Chico State College, the University of California, Berkeley and the School of Dentistry at Saint Louis University.
Document 6: Clyde J. Tate II: Major General Clyde J. "Butch" Tate II, USA (born 1957) is an American military lawyer who previously served as the 19th Deputy Judge Advocate General of the United States Army. Major General Tate graduated from the University of Kansas in 1979, receiving a commission through R.O.T.C. as a Second Lieutenant in the U.S. Army. He deferred entry to active duty in order to attend the University of Kansas School of Law. Major General Tate also holds Masters Degrees in Military Law and National Security Strategy. He attended the Judge Advocate Basic and Graduate Courses, the Army Command and General Staff College, and the National War College.
Document 7: Saint Louis College La Union: Saint Louis College (SLC) is a college in City of San Fernando, La Union, Philippines. It was founded by the Congregatio Immaculati Cordis Mariae (CICM). There are also sister schools of SLC, like Saint Louis University(SLU) in Baguio, University of Saint Louis Tuguegarao (USL) in Tuguegarao City, Saint Louis College of Cebu in Mandaue, Cebu, Saint Mary's University (Philippines) in Bayombong, Nueva Vizcaya, and Maryhill School of Theology in Quezon City.
Document 8: Saint Louis University: Saint Louis University (SLU, ) is a private Roman Catholic four-year research university with campuses in St. Louis, Missouri, United States and Madrid, Spain. Founded in 1818 by the Most Reverend Louis Guillaume Valentin Dubourg, It is the oldest university west of the Mississippi River and the second-oldest Jesuit university in the United States. It is one of 28 member institutions of the Association of Jesuit Colleges and Universities. The university is accredited by the North Central Association of Colleges and Secondary Schools. SLU's athletic teams compete in NCAA's Division I and are a member of the Atlantic 10 Conference. It has an enrollment of 13,505 students, including 8,687 undergraduate students and 4,818 graduate students that represents all 50 states and more than 70 foreign countries. Its average class size is 23.8 and the student-faculty ratio is 12:1.
Document 9: Saint Louis University School of Medicine: Saint Louis University School of Medicine (SLUSOM) is a private, American Medical School within Saint Louis University. Located in the city of St. Louis, Missouri, Saint Louis University School of Medicine was established in 1836 and has the distinction of awarding the first M.D. degree west of the Mississippi River.
Document 10: De Anza College: De Anza College is a 112 acre community college located in Cupertino, California. It was founded in 1967 on the site of the Beaulieu Winery and is named after the Spanish explorer Juan Bautista de Anza. Along with the arrival and growth of Apple Computer, the presence of De Anza College contributed significantly to the growth of Cupertino from a small town to an industrial city and an integral part of Silicon Valley. It consistently ranks #1 or #2 in the state for the total number of students who annually transfer to University of California and California State University campuses. The college is also the home of the California History Center, housed in a mansion called "Le Petit Trianon". The current president of De Anza college is Brian Murphy, replacing Martha Kanter who later became the Under Secretary of Education for the Obama Administration. The average class size at De Anza is 35, and approximately 2,800 students transfer per year. It also attracts a heavy international student population.
Document 11: Frances Butler: Frances C. Butler (born 1940 in St. Louis, Missouri) is an American book artist and educator. Butler received her B.A. in History at the University of California, Berkeley in 1961, her M.A. in History at Stanford University in 1963, and a second M.A. in Design at UC Berkeley in 1966. She was a professor at UC Berkeley from 1968–70, and began teaching at UC Davis in 1970. She ran Goodstuffs Handprinted Fabric from 1973–79, and co-founded Poltroon Press with Alastair Johnston in 1975.
Document 12: University of St. Thomas (Minnesota): The University of St. Thomas (also known as St. Thomas) is a private, Catholic, liberal arts, and archdiocesan university located in St. Paul and Minneapolis, United States. Founded in 1885 as a Catholic seminary, it is named after Thomas Aquinas, the medieval Catholic theologian and philosopher who is the patron saint of students. St. Thomas currently enrolls more than 10,000 students, making it Minnesota's largest private, non-profit university. Julie Sullivan became the 15th president in the history of the University in 2013.
Document 13: John O. Butler: Dr. John O. Butler was a dentist and periodontist in Chicago, Illinois, and founder of the John O. Butler Company, manufacturer of toothbrushes, dental floss in 1923 and sundry oral-care products under the Butler and GUM brand names. The company was purchased in 1988 by Sunstar Group, a major Japanese manufacturer of personal care products. In 2006 the John O. Butler Company adopted the name of its parent company, although the brand names Butler and GUM are still in use. John O. Butler Company provided Sunstar with both knowledge and access to the U.S. market. Sunstar provided John O. Butler with production methodology and technical assistance.
Document 14: Washington University in St. Louis: Washington University in St. Louis (also referred to as WashU, or WUSTL) is a private research university located in the St. Louis metropolitan area and in Missouri, United States. Founded in 1853, and named after George Washington, the university has students and faculty from all 50 U.S. states and more than 120 countries. Twenty-five Nobel laureates have been affiliated with Washington University, nine having done the major part of their pioneering research at the university. Washington University's undergraduate program is ranked 18th by "U.S. News & World Report" in 2018 and 11th by the Wall Street Journal in their 2018 rankings. The university is ranked 20th in the world in 2017 by the Academic Ranking of World Universities.
Document 15: Saint Louis University School of Law: Saint Louis University School of Law, also known as SLU LAW, is a private American law school located in St. Louis, Missouri. It is one of the professional graduate schools of Saint Louis University. Opened in 1843, it is the first law school west of the Mississippi River. The school has been ABA approved since 1924 and is a member of the Association of American Law Schools. Housed in Scott Hall, the law school has the highest enrollment of law students in Missouri . It offers both full- and part-time programs. The school is also home to Saint Louis University's Vincent C. Immel Law Library, which is one of the largest law libraries in the state of Missouri. Supreme Court Justice Clarence Thomas studied for his bar exam at the old Omer Poos Law Library on the main SLU campus.
ground_truth: Saint Louis University