Climber climbing an ice wall
A climber is breaking down an ice wall
One cannot be simultaneously both climbing something while also breaking it down.
exists e1 x1 x2 x3.(ne_nam_climber(x1) & Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_wall(x2) & of(x2,x3) & n_ice(x3))
exists e1 s1 x1 x2 x3.(a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_break(e1) & n_wall(x2) & of(x2,x3) & n_ice(x3) & n_climber(x1))