One climber helps another in the snow.
The climber helps the man slipping off the ledge.
You can not infer the man is slipping.
exists e1 x1 x2 x3.(n_snow(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_help(e1) & n_thing(x2) & n_climber(x1) & card_eq_1(x1))
exists e1 e2 s1 x1 x2 x3 x4.(n_ledge(x4) & n_man(x2) & n_climber(x1) & Theme(e2,x2) & Actor(e2,x1) & v_help(e2) & a_off(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x3) & v_slip(e1) & (x2 = x3))