A man wearing a headset plays a unique instrument for a group of onlookers.
The man is playing an instrument.
Playing instrument is same as saying plays a unique instrument.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(Theme(e2,x4) & Actor(e2,x1) & v_play(e2) & for(x4,x5) & of(x5,x6) & n_onlooker(x6) & n_group(x5) & n_instrument(x4) & a_unique(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_headset(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_instrument(x2))