One climber helps another in the snow.
The two men are walking unobstructed in the snow.
One climber can't be two men.
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 s1 x1 x2.(n_snow(x2) & n_man(x1) & card_eq_2(x1) & in(e1,x2) & a_unobstructed(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1))