A band of four young men plays.
These four interacts with each other
Four guys in a band plays together
exists e1 s1 x1 x2.(Actor(e1,x1) & v_play(e1) & of(x1,x2) & n_man(x2) & a_young(s1) & Theme(s1,x2) & card_eq_4(x2) & n_band(x1))
exists x1.(n_interact(x1) & card_eq_4(x1) & all x2.(n_other(x2) -> (a_topic(x1) & with(x1,x2))))