A person drives an ATV through mud.
A driver leads the ATV race.
THERE IS NO PROOF THAT THE DRIVER IS IN A RACE OR THAT THE DRIVER LEADS IT.
exists e1 x1 x2 x3.(through(e1,x3) & n_mud(x3) & Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & ne_org_atv(x2) & n_person(x1))
exists e1 x1 x2 x3.(n_race(x2) & (x2 = x3) & ne_org_atv(x3) & Theme(e1,x2) & Actor(e1,x1) & v_lead(e1) & n_driver(x1))