Two people listen to a man playing guitar while another man dances.
There is music playing.
If people are listening to a man playing guitar, then music must be playing
exists e1 e2 p1 x1 x2 x3 x4.(to(e1,x2) & exists e3 x5.(Actor(e3,x5) & v_dance(e3) & n_man(x5) & -(x5 = x2)) & n_man(x2) & n_man(x2) & while(e2,p1) & Theme(e2,x4) & Actor(e2,x3) & v_play(e2) & n_guitar(x4) & (x2 = x3) & Actor(e1,x1) & v_listen(e1) & n_people(x1) & card_eq_2(x1))
exists p1 x1 x2 x3.((x1 = x2) & n_playing(x2) & of(x2,x3) & n_music(x3))