Two children are in a sack race while a third child watches.
The children are tied with each other.
Just because two children are in a sack race doesn't mean they are tied with each other.
exists p1 s1 x1 x2 x3.(while(p1,x2) & n_watch(x2) & of(x2,x3) & n_child(x3) & a_third(s1) & Theme(s1,x2) & exists x4 x5.(in(x1,x4) & n_race(x4) & of(x4,x5) & n_sack(x5)) & n_child(x1) & card_eq_2(x1))
exists e1 x1.(n_child(x1) & all x2.(n_other(x2) -> with(e1,x2)) & Theme(e1,x1) & v_tie(e1))