Question: Which university founded in 1818 is the oldest university west of the Mississippi River: Saint Louis University or Marquette University? 

full_context: Document 1: Marquette University: Marquette University is a private, coeducational Catholic university located in Milwaukee, Wisconsin, in the central United States. Established by the Society of Jesus as Marquette College on August 28, 1881, it was founded by John Martin Henni, the first Bishop of Milwaukee.
Document 2: John J. Pauly: Dr. John J. Pauly became provost of Marquette University in 2008. He had served as dean of the J. William and Mary Diederich College of Communication at Marquette for two years before becoming provost, and had been chair for nine years of the communications department at Saint Louis University, where he was honored twice for excellence in teaching.
Document 3: 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 4: Jacques Marquette: Father Jacques Marquette S.J. (June 1, 1637 – May 18, 1675), sometimes known as Père Marquette or James Marquette, was a French Jesuit missionary who founded Michigan's first European settlement, Sault Ste. Marie, and later founded St. Ignace, Michigan. In 1673 Father Marquette and Louis Jolliet were the first Europeans to explore and map the northern portion of the Mississippi River.
Document 5: Marian University (Indiana): Marian University is a private, non-profit Roman Catholic university located on a 200-acre campus in Indianapolis, in the US state of Indiana. As of 2017, Marian University serves 2,164 undergraduate students, and 1,018 graduate students with a student-faculty ratio of 13:1. Founded in 1851 by the Sisters of St. Francis, the college was originally located in Oldenburg moving to Indianapolis in 1937. Marian was referred to as Marian College from 1936 until 2009, when it was renamed Marian University. Marian is religiously affiliated with the Roman Catholic Church. Marian University is currently headed by President Daniel Elsener.
Document 6: 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 7: 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 8: University of Detroit Mercy: University of Detroit Mercy ("Detroit Mercy") is a private, Roman Catholic co-educational university in Detroit, Michigan, United States, sponsored by both the Society of Jesus (the Jesuits) and the Religious Sisters of Mercy. Antoine M. Garibaldi, Ph.D., is the president. Founded in 1877, it is the largest Roman Catholic university in Michigan. It has three campuses, where it offers more than a hundred academic degrees and programs of study in liberal arts, clinical psychology, business, dentistry, education, law, engineering, architecture, nursing and allied health professions.
Document 9: 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 10: 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 11: Università Cattolica del Sacro Cuore: Università Cattolica del Sacro Cuore (English: Catholic University of the Sacred Heart or Catholic University of Milan), known as UCSC or UNICATT or simply Cattolica, is an Italian private research university founded in 1921. Cattolica, with its five affiliated campuses, is the largest private university in Europe and the largest Catholic University in the world. Its main campus is located in Milan, Italy, with satellite campuses in Brescia, Piacenza, Cremona and Rome.
Document 12: 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.
Document 13: Carroll University: Carroll University is a college located in Waukesha in the U.S. state of Wisconsin. Established in 1846, Carroll was Wisconsin's first four-year institution of higher learning. Carroll University is a private liberal arts college affiliated with the Presbyterian Church (USA). Its approximately 130 acre campus contains 19th century homes, facilities, and residences for over 3,500 students. The curriculum offers more than 95 areas of study and an integrated five-course general education component known as the Pioneer Core, which aims to globalize students through its central theme of cross-cultural interaction. Before July 1, 2008, Carroll University was known as Carroll College.
Document 14: 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 15: 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".
ground_truth: Saint Louis University