Black dog on grass, sniffing the ground.
A dog sniffs its food in the house.
On grass implies the dog is outside so it would not be in the house. If the dog sniffs its food it is likely not sniffing the ground.
exists e1 s1 x1 x2 x3 x4.(n_ground(x4) & a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_sniff(e1) & (x1 = x3) & on(x1,x2) & n_grass(x2) & n_dog(x1) & a_black(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_house(x3) & Theme(e1,x2) & Actor(e1,x1) & v_sniff(e1) & in(x2,x3) & n_food(x2) & of(x2,x1) & n_thing(x1) & n_dog(x1))