A dirt biker with number 625 is racing on a course.
a dirt bike racer on course
Racing on a course and a dirt bike racer on a course is the same .
exists e1 x1 x2 x3 x4.(on(e1,x4) & n_course(x4) & Actor(e1,x1) & v_race(e1) & with(x1,x3) & n_number(x3) & card_eq_625(x3) & n_biker(x1) & of(x1,x2) & n_dirt(x2))
exists e1 x1 x2 x3 x4 x5.(on(e1,x5) & n_course(x5) & Theme(e1,x2) & Actor(e1,x1) & v_event(e1) & n_racer(x2) & of(x2,x4) & n_bike(x4) & of(x2,x3) & n_dirt(x3) & n_thing(x1))