There are two greyhounds racing around a dirt track.
Greyhounds are walking around.
Greyhounds racing on a dirt track would require a running speed much faster than walking around.
exists p1 x1 e1 x2 x3 x4 x5.((x1 = x2) & around(e1,x4) & n_track(x4) & of(x4,x5) & n_dirt(x5) & Actor(e1,x3) & v_race(e1) & (x2 = x3) & n_greyhound(x2) & card_eq_2(x2))
exists e1 p1 x1.(exists s1.(Theme(s1,x1) & a_around(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_walk(e1) & n_greyhound(x1))