An athlete races down the track in his bike.
A man riding a pogo stick jumps down the road.
A person is either riding pogo stick or a bike.
exists s1 x1 x2 x3.(n_bike(x3) & of(x3,x2) & n_male(x2) & n_track(x2) & a_topic(x1) & down(x1,x2) & in(x2,x3) & n_race(x1) & a_athlete(s1) & Theme(s1,x1))
exists e2 e1 x1 x2 x3 x4 x5.(n_road(x5) & down(e2,x5) & Actor(e2,x1) & v_jump(e2) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_stick(x3) & of(x3,x4) & n_pogo(x4) & (x1 = x2) & n_man(x1))