Three police officers on motorcycles on the street with pedestrians walking on the sidewalk in the background.
Three motorcycle cops riding their beat
We cannot infer that the cops are riding their beat as they ride down the street, they may not be on duty.
exists e1 x1 x2 x3 x4 x5 x6 x7 x8.(n_background(x8) & n_sidewalk(x7) & n_street(x4) & a_topic(x1) & with(x1,x5) & in(e1,x8) & on(e1,x7) & Actor(e1,x6) & v_walk(e1) & (x5 = x6) & n_pedestrian(x5) & on(x1,x3) & on(x3,x4) & n_motorcycle(x3) & n_officer(x1) & of(x1,x2) & n_police(x2) & card_eq_3(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & n_beat(x4) & of(x4,x1) & n_thing(x1) & (x1 = x3) & n_cop(x1) & of(x1,x2) & n_motorcycle(x2) & card_eq_3(x1))