Complex sentence: The housing in the Docklands area was mostly council-owned terraced housing and flats, presenting a unique challenge for Government-how to completely replace an industry on a vast scale and make the contaminated, depressed docklands an attractive place to live and work.
Split into simpler sentences: The housing in the Docklands area was nearl all council-owned terraced housing and flats. This presented a unique challenge for Government-how to completely replace an industry on a vast scale and make the contaminated, depressed docklands an attractive place to live and work.