a girl and boy on bicycles stop on a green road.
A girl and boy are riding their bikes.
In order to be on bicycles, the girl and boy must be riding their bikes.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & on(e1,x5) & n_road(x5) & a_green(s1) & Theme(s1,x5) & Theme(e1,x4) & Actor(e1,x2) & v_stop(e1) & (x1 = x4) & on(x2,x3) & n_bicycle(x3) & n_boy(x2) & n_girl(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_ride(e1) & n_bike(x4) & of(x4,x2) & n_thing(x2) & n_boy(x3) & n_girl(x2) & subset_of(x3,x1) & subset_of(x2,x1))