The dogs ran around the dirt racetrack.
Greyhounds are racing at the track.
You can not infer they are greyhounds.
exists e1 x1 x2 x3.(n_racetrack(x2) & of(x2,x3) & n_dirt(x3) & n_dog(x1) & around(e1,x2) & Actor(e1,x1) & v_run(e1))
exists e1 x1 x2.(n_track(x2) & at(e1,x2) & Actor(e1,x1) & v_race(e1) & n_greyhound(x1))