A crowd of people holding political signs.
People are holding signs with political statements.
Signs with political statements on them are political signs.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_hold(e1) & n_sign(x4) & a_political(s1) & Theme(s1,x4) & (x2 = x3) & n_people(x2) & n_crowd(x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & with(x2,x3) & n_statement(x3) & a_political(s1) & Theme(s1,x3) & n_sign(x2) & n_people(x1))