A group of people watch someone play with fire.
The group of people know each other.
A group watches does not imply the people know each other.
exists e1 e2 x1 x2 x3 x4 x5.(Theme(e2,x3) & Actor(e2,x1) & v_watch(e2) & with(e1,x5) & n_fire(x5) & Actor(e1,x4) & v_play(e1) & (x3 = x4) & n_person(x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists x1 x2.(n_group(x1) & all x3.(n_other(x3) -> exists e1.(Theme(e1,x3) & Actor(e1,x1) & v_know(e1))) & of(x1,x2) & n_people(x2))