Question: Which institution of higher education consists of more separate establishments, Grinnell College or Texas Tech University System?

full_context: Document 1: Texas Tech University: Texas Tech University, often referred to as Texas Tech, Tech, or TTU, is a public research university in Lubbock, Texas. Established on  10, 1923 (1923--) , and originally known as Texas Technological College, it is the flagship institution of the four-institution Texas Tech University System. The university's student enrollment is the sixth-largest in Texas as of the Fall 2014 semester. The university shares its campus with Texas Tech University Health Sciences Center, making it the only campus in Texas to house an undergraduate university, law school, and medical school.
Document 2: Grinnell College: Grinnell College is a private liberal arts college in Grinnell, Iowa, U.S., known for its rigorous academics and tradition of social responsibility. It was founded in 1846, when a group of New England Congregationalists established the Trustees of Iowa College.
Document 3: Texas Tech University Health Sciences Center: The Texas Tech University Health Sciences Center (TTUHSC) offers programs in health professions, biomedical sciences, medicine, nursing, and pharmacy. TTUHSC is a multi-campus institution based in Lubbock with additional campuses located in Abilene, Amarillo, Dallas, El Paso and the Permian Basin. TTUHSC serves more than 100 counties in the western portion of Texas. The university is a separate institution from Texas Tech University; both universities are among four universities that are part of the Texas Tech University System.
Document 4: DePauw University: DePauw University in Greencastle, Indiana, is a private liberal arts college with an enrollment of approximately 2,300 students. The school has a Methodist heritage and was originally known as Indiana Asbury University. DePauw is a member of both the Great Lakes Colleges Association and the North Coast Athletic Conference. The Society of Professional Journalists was founded at DePauw.
Document 5: University of Texas System: The University of Texas System (UT System) encompasses 14 educational institutions in the U.S. state of Texas, of which eight are academic universities and six are health institutions. The UT System is headquartered in Austin, and has a total enrollment of over 216,000 students (largest university system in Texas) and employs more than 87,000 faculty and staff. The UT System's $24 billion endowment (as of the 2016 fiscal year) is the largest of any public university system in the United States.
Document 6: Oberlin College: Oberlin College is a private liberal arts college in Oberlin, Ohio. The college was founded as the Oberlin Collegiate Institute in 1833 by John Jay Shipherd and Philo Stewart. It is the oldest coeducational liberal arts college in the United States and the second oldest continuously operating coeducational institute of higher learning in the world. The Oberlin Conservatory of Music, part of the college, is the oldest continuously operating conservatory in the United States.
Document 7: Graceland University: Graceland University is a private liberal arts university of about 2300 students and 150 faculty. Graceland has campuses in Lamoni, Iowa and Independence, Missouri, in the United States. Graceland offers degree completion and master’s programs at satellite campuses in Centerville and Cedar Rapids (Iowa) and Trenton (Missouri). Graceland also offers undergraduate and graduate programs online. Graceland was founded in 1895. Though non-sectarian, Graceland was established by, and is affiliated with, the Community of Christ, formerly the Reorganized Church of Jesus Christ of Latter Day Saints (RLDS Church).
Document 8: Texas Tech University: Texas Tech University, often referred to as Texas Tech, Tech, or TTU, is a public research university in Lubbock, Texas. Established on  10, 1923 (1923--) , and originally known as Texas Technological College, it is the flagship institution of the four-institution Texas Tech University System. The university's student enrollment is the sixth-largest in Texas as of the Fall 2014 semester. The university shares its campus with Texas Tech University Health Sciences Center, making it the only campus in Texas to house an undergraduate university, law school, and medical school.
Document 9: Oklahoma State University System: The Oklahoma State University System is a university system comprising six educational institutes across Oklahoma: four general academic universities and two health institutions. Its flagship institute is the Oklahoma State University–Stillwater. The Oklahoma State University System has a total enrollment of about 35,073 students and is the largest university in the state of Oklahoma. It is governed by the Oklahoma Agricultural and Mechanical Colleges Board of Regents in Oklahoma City, Oklahoma. The System also has Agricultural Experiment Stations throughout Oklahoma and Cooperative Extension offices that serve all 77 counties. V. Burns Hargis currently serves as CEO of the Oklahoma State University System, in addition to his service as president of OSU-Stillwater.
Document 10: Ithaca College: Ithaca College is a private, nonsectarian, coeducational liberal arts college located on the South Hill of Ithaca, New York, United States. The college was founded by William Egbert in 1892 as a conservatory of music and is set against the backdrop of the city of Ithaca, Cayuga Lake, waterfalls, and gorges. The college is best known for its large list of alumni who have played substantial roles in the media and entertainment industries.
Document 11: List of Texas Tech University alumni: Texas Tech University, often referred to as Texas Tech or TTU, is a public, coeducational, research university located in Lubbock, Texas. Established on February 10, 1923, and originally known as Texas Technological College, it is the leading institution of the Texas Tech University System and has the sixth largest student body in the state of Texas. It is the only school in Texas to house an undergraduate institution, law school, and medical school at the same location. Initial enrollment in 1925 was 910 students; as of 2009, the university has 30,049 students from more than 110 countries, all 50 U.S. states and the District of Columbia. Since the university's first graduating class in 1927 of 26 students, Texas Tech has awarded more than 221,000 degrees, including 45,000 graduate and professional degrees to its alumni. The Texas Tech Alumni Association, with over 27,000 members, operates more than 120 chapters in cities throughout the United States and the world.
Document 12: University of Texas at Austin: The University of Texas at Austin (UT, UT Austin, or Texas) is a public research university and the flagship institution of the University of Texas System. Founded in 1881 as "The University of Texas," its campus is located in Austin, Texas, approximately 1 mile (1.6 km) from the Texas State Capitol. UT Austin was inducted into the Association of American Universities in 1929, becoming only the third university in the American South to be elected. The institution has the nation's eighth-largest single-campus enrollment, with over 50,000 undergraduate and graduate students and over 24,000 faculty and staff.
Document 13: Texas Tech University System: The Texas Tech University System is a state university system in Texas consisting of four separate universities in the state of Texas, of which two are academic institutions: Angelo State University and Texas Tech University, and two are health institutions: Texas Tech University Health Sciences Center, and Texas Tech University Health Sciences Center at El Paso. The System is headquartered in the Administration Building on the Texas Tech University campus in Lubbock, Texas.
Document 14: Lincoln College (Illinois): Lincoln College (chartered Lincoln University) is a private, independent liberal arts college located in Lincoln, Illinois. Lincoln College is a hybrid college offering both two-year and four-year degree programs for its students. Lincoln College was established in 1865 by the Cumberland Presbyterian Church, but is now independent and has no formal church affiliation. There were a few sites that were looked at as possibilities, and in December 1864, the site of Lincoln was selected. Due to the Civil War, the denomination wanted to create a college in the North because the denomination's other schools were located in the South. At this same time a movement started in the new community of Lincoln to start a college. On February 6, 1865, the Illinois General Assembly granted the charter that established the university. President Lincoln was aware the school would be named after him. Lincoln University was the first institution named for Abraham Lincoln and the only one during his lifetime. The groundbreaking for University Hall, the first college building, was held on the birthday of Abraham Lincoln, which was six days after the charter had been granted. By September 1866, University Hall's construction was completed. In November 1866, the college opened its doors to men and women alike. In 1868, there were three people who received their degrees.
Document 15: New-York Central College, McGrawville: New-York Central College, McGrawville was an institution of higher learning founded by Cyrus Pitt Grosvenor and other anti-slavery Baptists in 1849 in McGraw, New York. The college was notable because it educated blacks as well as whites in the time of southern slavery and northern segregation, and educated women with men at a time when few institutions of higher learning were co-educational. In addition to the African-Americans in the student body, at least two of the school's faculty were black as well. Some of the school's funding came from New York State
ground_truth: Texas Tech University System