A group of people demonstrating.
A group of protesters hold up their signs.
A group of protester could hold up anything than signs
exists e1 x1 x2 x3.(a_topic(x1) & of(x1,x2) & Actor(e1,x3) & v_demonstrate(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2 x3.(a_up(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_hold(e1) & n_sign(x3) & of(x3,x1) & n_thing(x1) & of(x1,x2) & n_protester(x2) & n_group(x1))