A police officer on a bike talking to a the person in the yellow tank top.
A bike officer is talking to someone.
A bike officer is a phrase that describes a police officer on a bike; they mean the same thing.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_top(x7) & of(x7,x8) & n_tank(x8) & a_yellow(s1) & Theme(s1,x7) & n_person(x5) & a_topic(x1) & on(x1,x3) & to(e1,x5) & in(x5,x7) & Time(x5,x6) & n_a(x6) & Actor(e1,x4) & v_talk(e1) & (x3 = x4) & n_bike(x3) & n_officer(x1) & of(x1,x2) & n_police(x2))
exists e1 x1 x2 x3.(to(e1,x3) & n_person(x3) & Actor(e1,x1) & v_talk(e1) & n_officer(x1) & of(x1,x2) & n_bike(x2))