Complex sentence: There are university owned cafeterias around the campus, but they are "franchised" to cooperatives, with the exception of the cafeteria at the Faculty of Sciences (called "Café Ciencias") which is run solely by students.
Split into simpler sentences: There are university owned cafeterias around the campus, but they are "franchised" to cooperatives. Though there is one exception: the cafeteria of the Faculty of Sciences (called Cafe Ciencias), which is run solely by students.