A group of people gather and holding different types of flags.
They are holding flags.
A group of people is a rephrasing of they are holding flags.
exists e2 e1 x1 x2 x3 x4 x5 x6 x7 x8.(n_type(x7) & a_topic(x1) & of(x1,x4) & Theme(e2,x6) & Actor(e2,x5) & v_hold(e2) & of(x6,x8) & n_flag(x8) & -(x6 = x7) & n_type(x6) & (x4 = x5) & n_people(x4) & of(x1,x2) & Actor(e1,x3) & v_gather(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2.(n_thing(x1) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_flag(x2))