Complex sentence: A new highway between Lhasa and the Gonggar Airport has been built by the Transportation Department of Tibet at a cost of RMB 1.5 billion yuan, which is a four-lane road of length.
Split into simpler sentences: A new highway between Lhasa and the Gonggar Airport has been built by the Transportation Department of Tibet at a cost of RMB 1.5 billion yuan. It is a four-lane road of length.