A motorcyclist gets moving.
The motorcyclist is on the street.
motorcyclist gets moving implies he is on the street.
exists e1 p1 x1.(exists e2.(Actor(e2,x1) & v_move(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_get(e1) & n_motorcyclist(x1))
exists p1 x1 x2.(n_street(x2) & n_motorcyclist(x1) & on(x1,x2))