A person is driving a tractor over some cracked ground.
A farmer is driving a tractor in a field
The cracked ground could be a road not necessarily a field.
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.(in(e1,x3) & n_field(x3) & Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_tractor(x2) & n_farmer(x1))