A boy is standing on a sidewalk with his bike.
The boy is about to ride his bike.
The boy may not be preparing to ride his bike.  He may have wrecked, or have a flat tire, or just arrives at his destination.
exists e1 x1 x2 x3.(with(e1,x3) & n_bike(x3) & of(x3,x1) & n_male(x1) & on(e1,x2) & n_sidewalk(x2) & Actor(e1,x1) & v_stand(e1) & n_boy(x1))
exists p1 s1 x1 x2.(n_bike(x2) & of(x2,x1) & n_male(x1) & n_boy(x1) & Topic(s1,p1) & Actor(s1,x1) & a_about(s1) & exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1)))