Complex sentence: The Mongstad scandal was a crisis in the Norwegian oil company Statoil in 1987-88 where the company exceed the NOK 8 billion budget by NOK 6 billion in upgrading the oil refinery at Mongstad.
Split into simpler sentences: The Mongstad scandal was a crisis in the Norwegian oil company Statoil in 1987-88. The company exceed the NOK 8 billion budget by NOK 6 billion in upgrading the oil refinery at Mongstad.