an old lady walks down the street.
the lady is white
There are other ethnicities the lady could be besides white.
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 s1 x1.(n_lady(x1) & Theme(s1,x1) & a_white(s1))