A group of climbers ascends a narrow, snowy mountain ridge.
The climbers are on Mt. Everest.
A snowy mountain ridge doesn't necessarily belong to Mt. Everest.
exists e1 s1 s2 s3 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_ascend(e1) & n_ridge(x3) & of(x3,x4) & n_mountain(x4) & a_snowy(s3) & Theme(s3,x3) & a_,(s2) & Theme(s2,x3) & a_narrow(s1) & Theme(s1,x3) & of(x1,x2) & n_climber(x2) & n_group(x1))
exists p1 s1 x1 x2.(ne_nam_mt(x2) & a_.(s1) & Theme(s1,x2) & n_climber(x1) & exists x3.(on(x1,x2) & on(x2,x3) & ne_tim_everest(x3)))