Complex sentence: The shorts became a part of "The Tracey Ullman Show" on April 19,1987 and after a three-season run, the sketch was developed into a half-hour prime time show and became a hit series for Fox.
Split into simpler sentences: The shorts became a part of "The Tracey Ullman Show" on April 19,1987. After a three-season run, the sketch was developed into a half-hour prime time show and became a hit series for Fox.