Two motorcyclist racing on an inclined track.
Two motorcyclists are wearing helmets.
Motorcyclists do not need to physically wear helmets in order to race.
exists s1 x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_track(x3) & a_inclined(s1) & Theme(s1,x3) & n_racing(x1) & of(x1,x2) & n_motorcyclist(x2) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_helmet(x2) & n_motorcyclist(x1) & card_eq_2(x1))