British mountaineer Alison Hargreaves becomes the first woman to climb Mount Everest alone and without oxygen tanks.
You need oxygen to climb Mount Everest
( z1 need :ARG0 ( z2 you ) :ARG1 ( z3 oxygen ) :purpose ( z4 climb :ARG0 z2 :ARG1 ( z5 mountain :name ( z6 name :op "Everest" ) ) ) )