Question: For which University did Marcus Jackson play college football ? 
Related documents: [0]  [DOC] The TCU Horned Frogs football team is the intercollegiate football team of Texas Christian University (TCU). The Horned Frogs compete in Division I Football Bowl Subdivision (FBS), the highest level of intercollegiate athletics sanctioned by the National Collegiate Athletic Association (NCAA) in the United States. [END] 
[1]  [DOC] Marcus Jackson (born November 30, 1986) is a professional arena football and indoor football quarterback who is currently a free agent. Jackson played college football for the TCU Horned Frogs football team. [END] 
Answer: 
Texas Christian University
Texas Christian University