The ground is covered in snow.
There is snow on the ground
A ground covered in snow is on the ground.
exists e1 x1 x2.(n_ground(x1) & in(e1,x2) & n_snow(x2) & Theme(e1,x1) & v_cover(e1))
exists p1 x1 x3.(n_ground(x3) & exists x2.((x1 = x2) & on(x2,x3) & n_snow(x2)))