A man plays the trumpet on stage
Someone is playing an instrument.
A trumpet is an instrument and a man is someone who can play it
exists e1 x1 x2 x3.(n_trumpet(x2) & on(e1,x3) & n_stage(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_instrument(x2) & n_person(x1))