A person is driving a tractor over some cracked ground.
Someone is driving a tractor outside
A person is someone. Driving over some cracked ground is driving outside.
exists e1 s1 x1 x2 x3.(over(e1,x3) & n_ground(x3) & a_cracked(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_tractor(x2) & n_person(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_outside(x2) & of(x2,x3) & n_tractor(x3) & n_person(x1))