A woman is watching the tide.
A woman is watching the ocean.
Tide can only be found in the ocean.
exists e1 x1 x2.(n_tide(x2) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_woman(x1))
exists e1 x1 x2.(n_ocean(x2) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_woman(x1))