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Bullock walking on air with Gravity role

29 October 2013 Last updated at 13:05 GMT

Sandra Bullock's space thriller Gravity has been exciting critics since its premiere at this year's Venice film festival.

The Hollywood actress has been praised for her role in the film which tells the story of an astronaut stranded in space.

Bullock spoke to the BBC's Mark Lawson about why the role appealed to her.

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