A man climbing a rock wall
A man is rock-climbing.
Rock-climbing is often done on a rock wall.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_climb(e1) & n_wall(x3) & of(x3,x4) & n_rock(x4) & (x1 = x2) & n_man(x1))
exists s1 x1.(Theme(s1,x1) & a_rock-climbing(s1) & n_man(x1))