A man sits on a rock cliff with trees in the background.
A guy is riding a motorcycle on dirt trails.
One can not be riding a motorcycle and sits on a rock simultaneously.
exists e1 x1 x2 x3 x4 x5.(n_background(x5) & with(e1,x4) & in(x4,x5) & n_tree(x4) & on(e1,x2) & n_cliff(x2) & of(x2,x3) & n_rock(x3) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists e1 x1 x2 x3 x4.(on(e1,x3) & n_trail(x3) & of(x3,x4) & n_dirt(x4) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_motorcycle(x2) & n_guy(x1))