Complex sentence: The rail-operators plan to close Line 4 and the station from August 2006 for a period of 3 years, to totally upgrade the line, which is not very much appreciated by the locals.
Split into simpler sentences: The rail-operators plan to close Line 4 and the station from August 2006 for a period of 3 years, to totally upgrade the line. A plan which is not very much appreciated by the locals.