A little girl brushing a woman's hair.
The boy brushed the hair.
Girl is the opposite of boy, and woman's hair is very specific compared to the phrase "the hair" which could belong to many things.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x2) & v_brush(e1) & n_hair(x4) & of(x4,x3) & n_woman(x3) & (x1 = x2) & n_girl(x1) & a_little(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_hair(x2) & n_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_brush(e1))