Complex sentence: Truman Capote interviewed Bobby Beausoleil while he was imprisoned in San Quentin State Prison in San Quentin, California and published the interview in the form of a short story "Then It All Came Down", included in the book Music for Chameleons.
Split into simpler sentences: Truman Capote interviewed Bobby Beausoleil while the latter was imprisoned in San Quentin State Prison in San Quentin, California. Capote then published the interview in the form of a short story "Then It All Came Down", included in Music for Chameleons.