The two men look at the shoreline from atop the bluff.
Two men look at the horizon.
if they are looking at the shoreline from atop the bluff, that is the horizon.
exists e1 x1 x2 x3 x4.(n_bluff(x4) & n_shoreline(x2) & n_man(x1) & card_eq_2(x1) & at(e1,x2) & atop(x3,x4) & from(x2,x3) & n_thing(x3) & Actor(e1,x1) & v_look(e1))
exists e1 x1 x2.(n_horizon(x2) & at(e1,x2) & Actor(e1,x1) & v_look(e1) & n_man(x1) & card_eq_2(x1))