A climber approaches the top of a cliff high above the surrounding terrain.
A climber scales the last cliff before the peak.
Approaching the top of a cliff doesn't imply that it is the last cliff before the peak.
exists e2 e1 x1 x2 x3 x4.(n_terrain(x4) & Actor(e2,x4) & v_surround(e2) & n_top(x2) & r_high(e1) & above(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_approach(e1) & of(x2,x3) & n_cliff(x3) & n_climber(x1))
exists e1 s1 x1 x2 x3.(n_peak(x3) & n_cliff(x2) & a_last(s1) & Theme(s1,x2) & before(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_scale(e1) & n_climber(x1))