A young child playing on a toy in the sand.
A child is playing in the grass.
The sand is not the same as grass.
exists e1 s1 x1 x2 x3 x4.(n_sand(x4) & a_topic(x1) & in(e1,x4) & on(e1,x3) & n_toy(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_child(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_grass(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_child(x1))