A person is playing a drum.
Sounds are being made.
Sounds are made by playing a drum.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_drum(x2) & n_person(x1))
exists e1 x1.(Theme(e1,x1) & v_make(e1) & n_sound(x1))