A man is playing the drums.
A guy is playing an instrument
A man is a guy, and the drums are a type of instrument.
exists e1 x1 x2.(n_drum(x2) & 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_guy(x1))