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

Context paragraphs:
Holy Angel University: Holy Angel University (HAU; colloquially, ""Oli"") is a private Roman Catholic research university in Angeles City, Pampanga, Philippines.  Founded in 1933, it is considered the first lay-founded Catholic school as well as the first co-educational Catholic high school.

St. John Vianney High School (New Jersey): St. John Vianney High School is a private coeducational Roman Catholic four-year high school, serving students in grades nine through twelve.  The school is located on a 38 acre campus in Holmdel Township, in Monmouth County, New Jersey, and is operated under the supervision of the Roman Catholic Diocese of Trenton.  The school has been accredited by the Middle States Association of Colleges and Schools Commission on Secondary Schools since 1983.

Bishop England High School: Bishop England High School is a diocesan Roman Catholic four-year high school in Charleston, South Carolina.  Until 1998, the school was located on Calhoun Street in downtown Charleston.  It is now located on Daniel Island in the city of Charleston.  With an enrollment of 730, it is the largest private high school in the state.  The school was founded in 1915 and was named for the Roman Catholic Diocese of Charleston's first bishop, John England.

Cantwell-Sacred Heart of Mary High School: Cantwell-Sacred Heart of Mary High School (CSHM), is a private Roman Catholic high school located in Montebello, California, precisely on the border of East Los Angeles and Montebello.  It is now owned and operated by the Roman Catholic Archdiocese of Los Angeles.  It is fully accredited by the Western Association of Schools and Colleges and the challenging curriculum prepares students for admission to four-year university programs and other career options.

Southern Catholic College: Southern Catholic College was a private, co-educational Roman Catholic four-year college located in Dawsonville, Georgia.  It was founded in 2000 by Thomas J. Clements and the first classes were held in the fall of 2005 and its last classes were held in April 2010.  The college was located within the Archdiocese of Atlanta.  Southern Catholic was authorized by the Nonpublic Postsecondary Education Commission of the state of Georgia and was preaccredited by the American Academy for Liberal Education, located in Washington, D.C.

Trinity High School (Whitesville, Kentucky): Trinity High School is a private, coeducational, Roman Catholic high school in Whitesville, Kentucky.  It is located in the Roman Catholic Diocese of Owensboro and is next door to its sister school, the K-8 St. Mary of the Woods private Roman Catholic elementary school.

St. Augustine Preparatory School: St. Augustine Preparatory School is a private all-male Roman Catholic four-year college preparatory school located in the Richland section of Buena Vista Township, in Atlantic County, New Jersey, United States.  Located on 118 acre of wooded property, it serves students in ninth through twelfth grade from across South Jersey under the auspices of the Roman Catholic Diocese of Camden.  The school has been accredited by the Middle States Association of Colleges and Schools Commission on Secondary Schools since 1983 and the New Jersey Association of Independent Schools.  St. Augustine was founded in 1959 by the Order of Saint Augustine as a minor seminary to help young men prepare for studies in the priesthood and religious life; the first class was a mixture of seminarians and day students.  The school is a member of the Augustinian Secondary Education Association.

De La Salle High School (Concord, California): De La Salle High School is a private Roman Catholic school for boys in Concord, California, United States.  Located in the Roman Catholic Diocese of Oakland, the school was founded in 1965 as a Lasallian institution.  De La Salle currently enrolls 1,039 students, and roughly 99% of each graduating class goes on to attend a university or college.  It is home to the Spartans, and its colors are green and silver.  The school motto is "Les Hommes De Foi", French for "Men Of Faith", which is based on the order's Latin motto "Signum Fidei".  The deans are Joe Aliotti and Bob Guelld.  Joe Grantham is head of admissions, and Leo Lopoz is the director of athletics.

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.

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.

Supporting paragraphs: Donald J. Butz Saint Louis University
Answer: Saint Louis University