This rodeo athlete is trying to ride this wild horse.
The horse is a stallion.
Not all wild horses are stallion.
exists e1 p1 s1 x1 x2 x3.(n_horse(x3) & a_wild(s1) & Theme(s1,x3) & n_athlete(x1) & of(x1,x2) & n_rodeo(x2) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2.(Theme(e2,x3) & Actor(e2,x1) & v_ride(e2)))
exists p1 x1.(n_horse(x1) & exists x2.((x1 = x2) & n_stallion(x2)))