A motocross rider leans his bike to the side as he prepares to wind around the rest of the racetrack.
A person is on their motocross bike
Motocross rider implies the person is on their bike.
exists e1 p1 x1 x2 x3 x4 x5 x6.(n_racetrack(x6) & n_rest(x5) & n_side(x4) & exists e2 p2.(Topic(e2,p2) & Actor(e2,x1) & v_prepare(e2) & exists e3.(around(e3,x5) & of(x5,x6) & Actor(e3,x1) & v_wind(e3))) & n_male(x1) & n_male(x1) & as(e1,p1) & to(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_lean(e1) & n_bike(x3) & of(x3,x1) & n_rider(x1) & of(x1,x2) & n_motocross(x2))
exists p1 x1 x2 x3.(on(x1,x2) & n_bike(x2) & of(x2,x3) & n_motocross(x3) & of(x2,x1) & n_thing(x1) & n_person(x1))