People are running a race while being filmed by a person on a bike.
People are being filmed.
People who are running may be filmed.
exists e1 e2 x1 x2 x3 x4.(while(e1,e2) & on(e2,x4) & n_bike(x4) & Actor(e2,x3) & n_person(x3) & Theme(e2,x1) & v_film(e2) & Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_race(x2) & n_people(x1))
exists e1 x1.(Theme(e1,x1) & v_film(e1) & n_people(x1))