The girl with a red coat is walking across the grass.
A girl walks on the grass wearing a coat.
Girl walks on the grass...is a rephrasing of girl with a red coat is walking...
exists e1 s1 x1 x2 x3.(n_grass(x3) & n_girl(x1) & across(e1,x3) & Actor(e1,x1) & v_walk(e1) & with(x1,x2) & n_coat(x2) & a_red(s1) & Theme(s1,x2))
exists e1 e2 x1 x2 x3 x4.(n_grass(x2) & on(e1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_wear(e2) & n_coat(x4) & (x2 = x3) & Actor(e1,x1) & v_walk(e1) & n_girl(x1))