question: For which University did Marcus Jackson play college football ? 
answer: Texas Christian University
context: Title: Marcus Jackson
  Passage: 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.
  Title: TCU Horned Frogs football
  Passage: 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.
  Title: Seantrel Henderson
  Passage: Seantrel Henderson (born January 21, 1992) is an American football offensive tackle for the Buffalo Bills of the National Football League (NFL).  He was drafted by the Bills in the seventh round of the 2014 NFL Draft.  He played college football at Miami.  Henderson attended Cretin-Derham Hall High School and originally signed a letter of intent to play college football at the University of Southern California, but was released from his commitment in July 2010 and eventually committed to the University of Miami.
citations: TCU Horned Frogs football Marcus Jackson