A brown dog jumping over an obstacle hurdle.
A dog in a competition.
Just because a dog is jumping over an obstacle hurdle does not mean it is in a competition.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & over(e1,x3) & n_hurdle(x3) & of(x3,x4) & n_obstacle(x4) & Actor(e1,x2) & v_jump(e1) & (x1 = x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists x1 x2.(a_topic(x1) & in(x1,x2) & n_competition(x2) & n_dog(x1))