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Sundance festival documentary tells story of chimp raised as baby

26 January 2011 Last updated at 07:12 GMT

Talking Movies reports on Project Nim, one of the most talked about films at this year's Sundance film festival.

It is a documentary from the Oscar-winning British director James Marsh, which examines a landmark experiment that sought to find out if a chimpanzee could communicate via sign language, if it were raised as a human baby.