A woman is a red tank top is riding horse.
A woman is horseback riding the fields.
You can not infer she is in the fields.
exists e1 p1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_ride(e1) & n_horse(x3) & exists s1 x4 x5.((x2 = x4) & n_top(x4) & of(x4,x5) & n_tank(x5) & a_red(s1) & Theme(s1,x4)) & (x1 = x2) & n_woman(x1))
exists p1 x1 x4.(n_field(x4) & exists e1 x2 x3.((x1 = x2) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & (x2 = x3) & n_horseback(x2)) & n_woman(x1))