Many kids are participating in a potato sack race.
The kids are eating pie.
If kids are participating in a potato sack race then they cannot also be eating pie.
exists e1 x1 x2 x3 x4.(in(e1,x2) & n_race(x2) & of(x2,x4) & n_sack(x4) & of(x2,x3) & n_potato(x3) & Actor(e1,x1) & v_participate(e1) & n_kid(x1) & n_quantity(x1))
exists e1 x1 x2.(n_kid(x1) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_pie(x2))