People waiting at a light on bikes.
People biking through the city.
Not a lights are only in the city.
exists e1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x3) & on(x3,x4) & n_bike(x4) & n_light(x3) & Actor(e1,x2) & v_wait(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2 x3.(n_city(x3) & a_topic(x1) & through(e1,x3) & Actor(e1,x2) & v_bike(e1) & (x1 = x2) & n_people(x1))