Complex sentence: John Train (born 25 May 1928), a New York-based investment advisor and author, attended Groton School and Harvard University (B.A. and M.A.), where he was head of the "Lampoon" and the Signet Society.
Split into simpler sentences: John Train (born 25 May 1928), a American investment advisor and author. He attended Groton School and Harvard University (B.A. and M.A.), where he was head of the "Lampoon" and the Signet Society.