A woman walks on a city street.
A woman walks through a grassy park.
A city street is not a grassy park.
exists e1 x1 x2 x3.(on(e1,x2) & n_street(x2) & of(x2,x3) & n_city(x3) & Actor(e1,x1) & v_walk(e1) & n_woman(x1))
exists e1 s1 x1 x2.(through(e1,x2) & n_park(x2) & a_grassy(s1) & Theme(s1,x2) & Actor(e1,x1) & v_walk(e1) & n_woman(x1))