How to extract the universities out?

[Guang]

I have a column of data looking like this:

School of Business, Rockefeller College of Public Affairs and Policy, State University of New York at Albany, 1400 Washington Avenue, Albany, NY 12222
Bowling Green State University, Bowling Green, OH 43403
Marketing Department, Wharton School, University of Pennsylvania, Philadelphia, PA 19104

I want to keep only the university information which means transforming into sth like this:

State University of New York at Albany
Bowling Green State University
University of Pennsylvania

Does anybody have an idea on how do I do this?