Stevedores are waiting for a boat to dock.
A man has fallen in the water.
waiting and water are two different things
exists e1 x1 x2 x3.(for(e1,x2) & to(x2,x3) & n_dock(x3) & n_boat(x2) & Actor(e1,x1) & v_wait(e1) & n_stevedore(x1))
exists e1 x1 x2.(n_water(x2) & in(e1,x2) & Actor(e1,x1) & v_fall(e1) & n_man(x1))