A race car sparks.
A motorcycle is acting up.
A race car is different from a motorcycle.
exists x1 x2 x3.(a_topic(x1) & n_sparks(x1) & of(x1,x3) & n_car(x3) & of(x1,x2) & n_race(x2))
exists e1 s1 x1.(a_up(s1) & Manner(e1,s1) & Actor(e1,x1) & v_act(e1) & n_motorcycle(x1))