Complex sentence: Trains would run from the station from Manchester Airport to Skegness railway station in 2004 the Manchester Airport train was cut short to Crewe and in September 2005 the Skegness train was cut short to Derby.
Split into simpler sentences: Trains would run from the station from Manchester Airport to Skegness railway station. In 2004, the Manchester Airport train was cut short to Crewe and, in September 2005, the Skegness train was cut short to Derby.