Complex sentence: John F. Kennedy visited Boston College in an official capacity seven times during his tenures as Massachusetts Senator and President of the United States--more frequently than he visited any other university, including his own alma mater, Harvard.
Split into simpler sentences: John F. Kennedy visited Boston College in an official capacity seven times during his tenures as Massachusetts Senator and President of the United States. This number exceedes that of any other university, including his own alma mater, Harvard.