People sitting and climbing on large rock formations.
People are sitting inside because it is raining on the rocks.
There could be people either inside, or outside sitting and climbing.
exists e1 e2 s1 x1 x2 x3 x4.(on(e2,x3) & n_formation(x3) & of(x3,x4) & n_rock(x4) & a_large(s1) & Theme(s1,x3) & Actor(e2,x2) & v_climb(e2) & n_people(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1))
exists e1 p1 s1 x1 x2.(n_rock(x2) & exists e2.(on(e2,x2) & Actor(e2,x1) & v_rain(e2)) & n_thing(x1) & because(e1,p1) & a_inside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_people(x1))