Kids participate in a potato sack race.
The kids are currently hopping through the race.
Participating in a race does not imply they are currently hopping through the race.
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))
exists e1 s1 x1 x2.(n_race(x2) & n_kid(x1) & a_currently(s1) & Manner(e1,s1) & through(e1,x2) & Actor(e1,x1) & v_hop(e1))