Question: How many public universities are a part of the system which held the 1949 NCAA Swimming and Diving Championships ?
Sentence (from "University of North Carolina"): Commonly referred to as the University of North Carolina system or the UNC system to differentiate it from the original campus in Chapel Hill, the university has a total enrollment of over 183,001 students and confers over 75% of all baccalaureate degrees in North Carolina in 2008.
Relevant evidence: No