The man is swimming in the ocean.
The man is swimming..
The man is swimming in the ocean shows that he is swimming.
exists e1 x1 x2.(n_ocean(x2) & n_man(x1) & in(e1,x2) & Actor(e1,x1) & v_swim(e1))
exists e1 x1.(n_man(x1) & Theme(e1,x1) & v_swimming..(e1))