There is a little blond-hair girl with a green sweatshirt and a red shirt playing on a playground.
A little girl has black hair.
Sentence 1 is specific that the girl has blond hair but sentence 2 is specific that the girl has black hair so it cannot be the same girl in both sentences.
exists p1 x1 e1 s1 s2 s3 s4 x2 x3 x4 x5 x6 x7.((x1 = x2) & with(x2,x3) & subset_of(x5,x3) & on(e1,x7) & n_playground(x7) & Actor(e1,x6) & v_play(e1) & (x5 = x6) & n_shirt(x5) & a_red(s4) & Theme(s4,x5) & subset_of(x4,x3) & n_sweatshirt(x4) & a_green(s3) & Theme(s3,x4) & n_girl(x2) & a_blond-hair(s2) & Theme(s2,x2) & a_little(s1) & Theme(s1,x2))
exists e1 s1 s2 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_hair(x2) & a_black(s2) & Theme(s2,x2) & n_girl(x1) & a_little(s1) & Theme(s1,x1))