Original sentence: Hanmer Springs' Queen Mary Hospital, formerly the South Island's leading rehabilitation centre for sufferers of drug addiction, was closed in 2003.The town is built around hot springs which originate in the fractured rock bed along the Hanmer fault
Edited sentence: Hanmer Springs' Queen Mary Hospital, the South Island's leading rehabilitation centre for sufferers of drug addiction, was  controversially closed in 2003.The hot springs were produced by the fractured rock bed along the Hanmer fault.The town is built around hot springs