Complex sentence: In the North Atlantic off the coast of Greenland, a highly advanced deep sea oil rig has been recently constructed by the company Nexecon Petroleum, and named "Colossus" for its immense size.
Split into simpler sentences: In the North Atlantic off the coast of Greenland, a highly advanced deep sea oil rig has been recently constructed by a company, Nexecon Petroleum. The oil rig is named "Colossus" for its immense size.