A stone wall with lush green grass.
A plastic wall is shown in green grass.
Plastic and stone are two different building materials.
exists s1 s2 x1 x2 x3.(a_topic(x1) & with(x1,x3) & n_grass(x3) & a_green(s2) & Theme(s2,x3) & a_lush(s1) & Theme(s1,x3) & n_wall(x1) & of(x1,x2) & n_stone(x2))
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_grass(x3) & a_green(s1) & Theme(s1,x3) & Theme(e1,x1) & v_show(e1) & n_wall(x1) & of(x1,x2) & n_plastic(x2))