Complex sentence: The final film produced by Warner Bros. Feature Animation was 2004's "Clifford's Really Big Movie", which was based on the Scholastic Corporation book series, "Clifford the Big Red Dog" and the PBS Kids television series with the same name.
Split into simpler sentences: The final film produced by Warner Bros. Feature Animation was 2004's "Clifford's Really Big Movie". It was based on the Scholastic Corporation book series, "Clifford the Big Red Dog" and the PBS Kids television series with the same name.