Crowds peddle their bikes across a city street.
People are riding bikes.
Riding  bikes on a street by a group
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_peddle(e1) & across(x2,x3) & n_street(x3) & of(x3,x4) & n_city(x4) & n_bike(x2) & of(x2,x1) & n_thing(x1) & n_crowd(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & n_people(x1))