A police force donned in full gear are crossing the street.
Police march to meet the rioters.
All police do not necessarily march. Just because police are donned in full gear does not mean there are rioters.
exists e1 e2 s1 x1 x2 x3 x4 x5.(n_street(x5) & Theme(e2,x5) & Actor(e2,x1) & v_cross(e2) & in(e1,x4) & n_gear(x4) & a_full(s1) & Theme(s1,x4) & Theme(e1,x3) & v_don(e1) & (x1 = x3) & n_force(x1) & of(x1,x2) & n_police(x2))
exists e1 p1 x1 x2.(n_rioter(x2) & Topic(e1,p1) & Actor(e1,x1) & v_march(e1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_meet(e2)) & n_police(x1))