Three young men sing together while one plays the guitar.
Three men screaming at a pigeon.
Men cannot sing and be screaming at same time.
exists e1 p1 p2 s1 x1 x3.(n_guitar(x3) & exists e2 x2.(Theme(e2,x3) & Actor(e2,x2) & v_play(e2) & n_thing(x2) & card_eq_1(x2)) & while(e1,p2) & exists s2.(Theme(s2,x1) & a_together(s2)) & Topic(e1,p1) & Actor(e1,x1) & v_sing(e1) & n_man(x1) & a_young(s1) & Theme(s1,x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(a_topic(x1) & at(e1,x3) & n_pigeon(x3) & Actor(e1,x2) & v_scream(e1) & (x1 = x2) & n_man(x1) & card_eq_3(x1))