four young people have stopped to listen to a man play a saxophone.
The man playing the saxophone is a street musician.
Not all men playing a saxophone are street musicians.
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 p1 x1 x2 x3.(n_saxophone(x3) & n_man(x1) & exists x4 x5.((x1 = x4) & n_musician(x4) & of(x4,x5) & n_street(x5)) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2))