four young people have stopped to listen to a man play a saxophone.
Four young people are listening to a man play the guitar.
The man cannot play a saxophone and a guitar at the same time.
exists e1 p1 s1 s2 x1 x2.(Topic(e1,p1) & exists e2.(all x3.(n_saxophone(x3) -> exists x4 x5.(to(e2,x4) & for(x4,x3) & n_play(x4) & of(x4,x5) & n_man(x5))) & Actor(e2,x1) & v_listen(e2)) & Actor(e1,x2) & v_stop(e1) & n_people(x2) & a_young(s2) & Theme(s2,x2) & card_eq_4(x2) & n_people(x1) & a_young(s1) & Theme(s1,x1) & card_eq_4(x1))
exists e1 s1 x1 x2 x3 x4.(to(e1,x2) & n_guitar(x4) & (x2 = x4) & n_play(x2) & of(x2,x3) & n_man(x3) & Actor(e1,x1) & v_listen(e1) & n_people(x1) & a_young(s1) & Theme(s1,x1) & card_eq_4(x1))