A man is playing guitar by the ocean.
the man plays guitar at the beach
One must be by the ocean to be at the beach.
exists e1 x1 x2 x3.(n_ocean(x3) & by(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_man(x1))
exists e1 x1 x2 x3.(n_beach(x3) & n_man(x1) & at(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2))