Complex sentence: The Plym Valley Railway has rebuilt the section of the line between Marsh Mills and Plym Bridge, And preserves steam and diesel locomotives, carriages, wagons and other rolling stock, buildings, machinery and equipment of historic railway interest.
Split into simpler sentences: The Plym Valley Railway has rebuilt the Marsh Mills to Plym Bridge section of the line. The line preserves steam and diesel locomotives, carriages, wagons and other rolling stock, buildings, machinery and equipment of historic railway interest.