A group of police officers in riot gear.
A group of police officers are wearing protection.
riot gear can also be called wearing protection.
exists x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x4) & n_gear(x4) & of(x4,x5) & n_riot(x5) & of(x1,x2) & n_officer(x2) & of(x2,x3) & n_police(x3) & n_group(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_wear(e1) & n_protection(x4) & of(x1,x2) & n_officer(x2) & of(x2,x3) & n_police(x3) & n_group(x1))