Four men play music on stringed instruments.
Four men are playing woodwind instruments.
Stringed instrument is not the same as woodwind instruments.
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & on(x2,x3) & n_instrument(x3) & a_stringed(s1) & Theme(s1,x3) & n_music(x2) & n_man(x1) & card_eq_4(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_instrument(x2) & of(x2,x3) & n_woodwind(x3) & n_man(x1) & card_eq_4(x1))