A white dog with a purple necklace on plays in the snow.
A dog plays in the grass in summer.
snow is not the same as grass
exists s1 s2 x1 x2 x3 x4.(n_snow(x4) & a_topic(x1) & with(x1,x2) & on(x2,x3) & in(x3,x4) & n_play(x3) & n_necklace(x2) & a_purple(s2) & Theme(s2,x2) & n_dog(x1) & a_white(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_grass(x2) & in(e1,x3) & n_summer(x3) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1))