An athlete is jumping over a hurdle.
a person jumping over hurdles in a marathon
An athlete could jump over a hurdle in a practice not just a marathon.
exists e1 s1 x1 x2.(a_over(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_hurdle(x2) & n_athlete(x1))
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_marathon(x4) & a_over(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_jump(e1) & n_hurdle(x3) & (x1 = x2) & n_person(x1))