An athlete riding a green dirt bike around a curve on the track.
A person is riding a bike.
An athlete is a person and a dirt bike is a type of bike
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_track(x6) & a_topic(x1) & around(e1,x5) & on(x5,x6) & n_curve(x5) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_bike(x3) & of(x3,x4) & n_dirt(x4) & a_green(s1) & Theme(s1,x3) & (x1 = x2) & n_athlete(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & n_person(x1))