A group of people demonstrating.
Several people are doing something together.
demonstrating is another way of saying doing something
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 s2 x1 x2.(a_together(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_thing(x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))