Some bike riders riding on a path through a city.
The people are on a bike tour of the city.
Just because bike riders are riding on a path through a city does not mean that they are on a bike tour of the city.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & through(e1,x5) & n_city(x5) & on(e1,x4) & n_path(x4) & Actor(e1,x3) & v_ride(e1) & (x1 = x3) & n_rider(x1) & of(x1,x2) & n_bike(x2))
exists p1 x1 x4.(n_city(x4) & n_people(x1) & exists x2 x3.(on(x1,x2) & of(x2,x4) & n_tour(x2) & of(x2,x3) & n_bike(x3)))