Complex sentence: The Buick Apollo is a compact car manufactured from 1973 to 1975 based on the GM X platform along with the Oldsmobile Omega, Chevrolet Nova, and the Pontiac Ventura.
Split into simpler sentences: The Buick Apollo is a compact car that was manufactured from 1973 to 1975 by Buick. It was based on the GM X platform along with the Oldsmobile Omega, Chevrolet Nova, and the Pontiac Ventura.