Question: Keira Knightley began acting as a child and had several supporting roles such as in "Everest", but became famous after landing which role?
Sentence (from "Everest (2015 film)"): Everest is a 2015 British-American biographical adventure film directed and co-produced by Baltasar Kormákur, co-produced by Tim Bevan, Eric Fellner, Nicky Kentish Barnes, Tyler Thompson and Brian Oliver and written by William Nicholson and Simon Beaufoy, adapted from Beck Weathers' memoir "Left for Dead: My Journey Home from Everest" (2000).
Relevant evidence: Yes