an old lady walks down the street.
The old lady has brown hair.
There are other colors her hair could be besides brown hair.
exists e1 s1 x1 x2.(n_street(x2) & down(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_lady(x1) & a_old(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_lady(x1) & a_old(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_brown(e1) & n_hair(x2))