A boy and a dog run through the grass.
A boy and his dog run through field.
Just because a boy and a dog run through the grass doesn't mean that he is running with his dog through the field.
exists s1 x1 x2 x3 x4.(n_grass(x4) & a_topic(s1) & subset_of(x2,s1) & through(x2,x4) & n_run(x2) & of(x2,x3) & n_dog(x3) & subset_of(x1,s1) & n_boy(x1))
exists e1 x1 x2 x3 x4.(through(e1,x4) & n_field(x4) & Actor(e1,x1) & v_run(e1) & subset_of(x3,x1) & n_dog(x3) & of(x3,x2) & n_male(x2) & subset_of(x2,x1) & n_boy(x2))