Little boy in a orange shirt holding a broom with a christmas tree in the background.
the little girl used her new broom
He refers to a boy, not a girl. In addition, the girl is just holding the broom, not using the broom.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_background(x8) & a_topic(x1) & in(x1,x2) & in(e1,x8) & with(e1,x6) & n_tree(x6) & of(x6,x7) & n_christmas(x7) & Theme(e1,x5) & Actor(e1,x4) & v_hold(e1) & n_broom(x5) & (x2 = x4) & n_shirt(x2) & of(x2,x3) & n_orange(x3) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists e1 s1 s2 x1 x2.(n_broom(x2) & a_new(s2) & Theme(s2,x2) & of(x2,x1) & n_female(x1) & n_girl(x1) & a_little(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_use(e1))