Two people on a motorcycle riding through chinatown.
Two people on a motorcycle riding through the city.
The people may be outside of the city, or in the suburbs, rather than the through the city itself.
exists x1 x2 x3 x4.(a_topic(x1) & on(x1,x2) & through(x2,x4) & n_chinatown(x4) & n_riding(x2) & of(x2,x3) & n_motorcycle(x3) & n_people(x1) & card_eq_2(x1))
exists x1 x2 x3 x4.(n_city(x4) & a_topic(x1) & on(x1,x2) & through(x2,x4) & n_riding(x2) & of(x2,x3) & n_motorcycle(x3) & n_people(x1) & card_eq_2(x1))