People on bicycles waiting at an intersection.
People wait on traffic.
Waiting at an intersection implies wait on traffic.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(x1,x2) & at(e1,x4) & n_intersection(x4) & Actor(e1,x3) & v_wait(e1) & (x2 = x3) & n_bicycle(x2) & n_people(x1))
exists e1 x1 x2.(on(e1,x2) & n_traffic(x2) & Actor(e1,x1) & v_wait(e1) & n_people(x1))