A dog hurdles over a series of poles.
A dog jumps over some poles
When a dog hurdles over something, it jumps.
exists x1 x2 x3 x4.(a_topic(x1) & over(x1,x3) & of(x3,x4) & n_pole(x4) & n_series(x3) & n_hurdle(x1) & of(x1,x2) & n_dog(x2))
exists e1 x1 x2.(over(e1,x2) & n_pole(x2) & Actor(e1,x1) & v_jump(e1) & n_dog(x1))