Complex sentence: Built by Multiplex at a cost of 225 million and officially opened in August 2004 by the Hon Dr Geoff Gallop, MLA, Premier of Western Australia, its construction was extremely controversial, owing to an overblown budget and an unprepossessing external appearance.
Split into simpler sentences: Built by Multiplex at a cost of 225 million it was officially opened in August 2004 by Premier Geoff Gallop. Its construction was extremely controversial, owing to an overblown budget and an unprepossessing external appearance.