A man is climbing a rock formation.
A man is free climbing a treacherous rock formation.
Not all climbing is free climbing. Not all rock formations are treacherous.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_formation(x2) & of(x2,x3) & n_rock(x3) & n_man(x1))
exists e1 s1 s2 x1 x2 x3.(for(s1,e1) & Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_formation(x2) & of(x2,x3) & n_rock(x3) & a_treacherous(s2) & Theme(s2,x2) & Theme(s1,x1) & a_free(s1) & n_man(x1))