little girl with long brown hair sitting on counter.
A lttle girl eats breakfest whil sitting on the counter.
A little girl sitting on a counter isn't necessarily on it because that is where she eats breakfest. She could be sitting on the counter for many different reasons.
exists e1 s1 s2 s3 x1 x2 x3 x4.(a_topic(x1) & with(x1,x2) & on(e1,x4) & n_counter(x4) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_hair(x2) & a_brown(s3) & Theme(s3,x2) & a_long(s2) & Theme(s2,x2) & n_girl(x1) & a_little(s1) & Theme(s1,x1))
exists e1 e2 s1 s2 x1 x2 x3.(n_counter(x3) & for(e1,e2) & on(e2,x3) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_whil(x2) & r_most(s2) & a_breakfest(s2) & Theme(s2,x2) & n_girl(x1) & a_lttle(s1) & Theme(s1,x1))