The two small dogs run through the grass.
the dogs chase after a squirell
The dogs can run without them chasing a squirell.
exists e1 s1 x1 x2.(n_grass(x2) & n_dog(x1) & a_small(s1) & Theme(s1,x1) & card_eq_2(x1) & through(e1,x2) & Actor(e1,x1) & v_run(e1))
exists x1 x2 x3.(n_chase(x1) & of(x1,x2) & n_dog(x2) & a_topic(x1) & after(x1,x3) & n_squirell(x3))