Original sentence: Ever since the mall opened in 1981 it has been the largest mall in the world.The Mall of Arabia, located in Dubai Land, in Dubai, United Arab Emirates, will become the largest mall upon its completion in 2006
Edited sentence: Ever since the mall opened in 1981 it has been the largest shopping center in Canada.Future expansion may allow the West Edmonton Mall to take the title back.It is the largest mall in the world since 1981.Its title of largest mall in the world will be taken by the Mall of Arabia, located in Dubai Land, in Dubai, United Arab Emirates, in 2006