Two people are riding motorcycle in a race.
Two people in a motorcycle race.
A motorcycle race is a race where people ride motorcycles.
exists e1 x1 x2 x3.(in(e1,x3) & n_race(x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_motorcycle(x2) & n_people(x1) & card_eq_2(x1))
exists x1 x2 x3.(a_topic(x1) & in(x1,x2) & n_race(x2) & of(x2,x3) & n_motorcycle(x3) & n_people(x1) & card_eq_2(x1))