A hiker is climbing up a very steep mountain.
A hiker on a mountain side
When a hiker climbs a steep mountain, they are on the side of the mountain.
exists e1 s1 s2 x1 x2.(a_up(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_mountain(x2) & a_steep(s1) & Theme(s1,x2) & r_very(x2) & n_hiker(x1))
exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & n_side(x2) & of(x2,x3) & n_mountain(x3) & n_hiker(x1))