Complex sentence: Later that year, in September, Lisa finally gave birth to a son, whom she called Tommy, but she was later knocked down and killed by a car outside the Rovers Return the following year after dumping Terry for bookie Des Barnes.
Split into simpler sentences: Later that year in September, Lisa gave birth to a son, whom she named Tommy. Lisa was knocked down and killed by a car outside the Rovers Return the following year, after leaving Terry for Des Barnes.