Complex sentence: Born Gail Shikles, Jr. in Liberty, Missouri, he studied dentistry at the University of Kansas but acting with the university's drama club saw him give up on his studies to try to make it in the Hollywood film industry.
Split into simpler sentences: Born Gail Shikles, Jr. in Liberty, Missouri, he studied dentistry at the University of Kansas. Acting with the university's drama club prompted him to give up on his studies and try to make it in the Hollywood film industry.