A man climbing a rock wall
The man is not sure which way to climb next.
climbing and not being sure are different actions
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))
(x)