A little brown dog is running on the grass.
A dog is running with a cat.
Just because the dog is running, does not mean the dog is running with a cat.
exists e1 s1 s2 x1 x2.(n_grass(x2) & on(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_brown(s2) & Theme(s2,x1) & a_little(s1) & Theme(s1,x1))
exists e1 x1 x2.(with(e1,x2) & n_cat(x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1))