A black dog is running across a grassy field by a tall fence.
The dog is playing fetch
A dog can run without playing fetch.
exists e1 s1 s2 s3 x1 x2 x3.(by(e1,x3) & n_fence(x3) & a_tall(s3) & Theme(s3,x3) & across(e1,x2) & n_field(x2) & a_grassy(s2) & Theme(s2,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_black(s1) & Theme(s1,x1))
exists e1 s1 x1.(n_dog(x1) & a_fetch(s1) & Manner(e1,s1) & Actor(e1,x1) & v_play(e1))