Complex sentence: The tram network had formed part of a larger regeneration project in the areas in which it was intended to run, related to Liverpool's award of European Capital of Culture in 2008-the project's cancellation will throw some of these plans into doubt.
Split into simpler sentences: The tram network had formed part of a larger regeneration project in the areas in which it was intended to run, related to Liverpool's award of European Capital of Culture in 2008. The project's cancellation will throw some of these plans into doubt.