A man is playing an instrument.
A woman in the park.
In one sentence a man is playing an instrument while in the second a woman is in the park.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_instrument(x2) & n_man(x1))
exists x1 x2.(n_park(x2) & a_topic(x1) & in(x1,x2) & n_woman(x1))