A person rides their bike down a hill.
The person is outside.
Hill are only located outside
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & down(x2,x3) & n_hill(x3) & n_bike(x2) & of(x2,x1) & n_thing(x1) & n_person(x1))
exists s1 x1.(n_person(x1) & Theme(s1,x1) & a_outside(s1))