A person rides a motorbike down a dirt hill.
A person is riding a motorcycle in the dirt.
The motorbike is in the dirt.
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & down(x2,x3) & n_hill(x3) & of(x3,x4) & n_dirt(x4) & n_motorbike(x2) & n_person(x1))
exists e1 x1 x2 x3.(n_dirt(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_motorcycle(x2) & n_person(x1))