People are outside waving flags.
Humans are outside moving around.
Waving flags outside means humans are outside moving.
exists e1 s1 x1 x2.(for(s1,e1) & Theme(e1,x2) & Actor(e1,x1) & v_wave(e1) & n_flag(x2) & Theme(s1,x1) & a_outside(s1) & n_people(x1))
exists e1 s1 s2 x1.(for(s1,e1) & a_around(s2) & Manner(e1,s2) & Actor(e1,x1) & v_move(e1) & Theme(s1,x1) & a_outside(s1) & n_human(x1))