Complex sentence: For four weeks from 24 January 2011, Go! co-operative is running a trial commuter service from Medstead & Four Marks railway station to Alton, over part of the Mid-Hants Railway.
Split into simpler sentences: For four weeks from 24 January 2011, Go! Cooperative is running a trial commuter service from Medstead & Four Marks railway station to Alton, over part of the Mid-Hants Railway.