A dog jogs through the grass.
a cat runs through the grass
A dog is not a cat.
exists e1 x1 x2.(n_grass(x2) & through(e1,x2) & Actor(e1,x1) & v_jog(e1) & n_dog(x1))
exists e1 x1 x2.(n_grass(x2) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_cat(x1))