A colorful parade led by a man carrying a red flag.
People are in a parade.
If a man is leading a parade, people are in the parade because you cannot lead without people.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & Actor(e1,x3) & Theme(e2,x5) & Actor(e2,x4) & v_carry(e2) & n_flag(x5) & a_red(s2) & Theme(s2,x5) & (x3 = x4) & n_man(x3) & Theme(e1,x2) & v_lead(e1) & (x1 = x2) & n_parade(x1) & a_colorful(s1) & Theme(s1,x1))
exists p1 x1.(exists x2.(in(x1,x2) & n_parade(x2)) & n_people(x1))