two girls in white dresses standing by large horses.
People with great dresses
White dresses are not necessarily great and can be owned by anyone, not just girls.
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & by(e1,x4) & n_horse(x4) & a_large(s2) & Theme(s2,x4) & Actor(e1,x3) & v_stand(e1) & (x2 = x3) & n_dress(x2) & a_white(s1) & Theme(s1,x2) & n_girl(x1) & card_eq_2(x1))
exists s1 x1 x2.(a_topic(x1) & with(x1,x2) & n_dress(x2) & a_great(s1) & Theme(s1,x2) & n_people(x1))