Complex sentence: The pipeline was to be constructed jointly by E.ON Ruhrgas and Wingas, a joint company of Wintershall, subsidiary of BASF, and Russian Gazprom at a project cost of €600 million ($759.2 million).
Split into simpler sentences: The pipeline was to be constructed jointly by E.ON Ruhrgas and Wingas, a joint venture of Wintershall, subsidiary of BASF, and Russian Gazprom. The project was expected to cost €600 million ($759.2 million).