A group of people are riding on a John Deere tractor in a field.
A bunch of people are riding on a giant snake.
John Deere tractor and giant snake are different things
exists e1 x1 x2 x3 x4 x5 x6.(on(e1,x3) & in(x3,x6) & n_field(x6) & n_tractor(x3) & (x3 = x5) & ne_org_deere(x5) & (x3 = x4) & ne_org_john(x4) & Actor(e1,x1) & v_ride(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_snake(x3) & a_giant(s1) & Theme(s1,x3) & Actor(e1,x1) & v_ride(e1) & of(x1,x2) & n_people(x2) & n_bunch(x1))