The girl is wearing a pink tutu and walking through the grass.
The girl is happy
In the first sentence you can't tell if the girl is happy or sad.
exists e1 s1 x1 x2 x3 x4 x5.(n_grass(x5) & n_girl(x1) & through(e1,x5) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & subset_of(x4,x2) & n_walking(x4) & subset_of(x3,x2) & n_tutu(x3) & a_pink(s1) & Theme(s1,x3))
exists s1 x1.(n_girl(x1) & Theme(s1,x1) & a_happy(s1))