A motorcycle racer has hit some mud on the track.
A tall human on a cycle.
Not all motorcycle racers are a tall human.
exists e1 x1 x2 x3 x4.(n_track(x4) & Theme(e1,x3) & Actor(e1,x1) & v_hit(e1) & on(x3,x4) & n_mud(x3) & n_racer(x1) & of(x1,x2) & n_motorcycle(x2))
exists s1 x1 x2.(a_topic(x1) & on(x1,x2) & n_cycle(x2) & n_human(x1) & a_tall(s1) & Theme(s1,x1))