Complex sentence: Penlink will connect Stanmore Bay with Long Bay, effectively extending the urban area refered to as East Coast Bays, which is predicted to run from Whangaparaoa into Mairangi Bay.
Split into simpler sentences: Penlink will connect Stanmore Bay with Long Bay, effectivly extending the urban area refered to as East Coast Bays. Which is predicted to run from Whangaparaoa, into Mairangi Bay.