Children participate in a sack race.
ALL THE KIDS ARE RACING IN SACKS
racing in sacks shows that the children participate in sack race
exists e1 x1 x2 x3.(in(e1,x2) & n_race(x2) & of(x2,x3) & n_sack(x3) & Actor(e1,x1) & v_participate(e1) & n_child(x1))
exists s1 x1 x2 x3 x4 x5.(ne_nam_sacks(x5) & ne_nam_racing(s1) & (s1 = x4) & ne_nam_are(x4) & (s1 = x3) & ne_nam_kids(x3) & (s1 = x2) & ne_nam_the(x2) & (s1 = x1) & ne_nam_all(x1) & a_topic(s1) & in(s1,x5))