Two jockeys on their horses on a racetrack.
The are animals.
Animals denotes horses.
exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & on(x2,x3) & n_racetrack(x3) & n_horse(x2) & of(x2,x1) & n_thing(x1) & n_jockey(x1) & card_eq_2(x1))
(x)