a motocross rider gassing his bike.
The person is getting ready for a race.
We know that the motocross rider is gassing up his bike but we do not know he is getting ready for a race.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_gas(e1) & n_bike(x4) & of(x4,x1) & n_male(x1) & (x1 = x3) & n_rider(x1) & of(x1,x2) & n_motocross(x2))
exists e1 p1 x1.(n_person(x1) & exists s1 x2.(for(s1,x2) & n_race(x2) & Theme(s1,x1) & a_ready(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_get(e1))