People in costume and hats pose with American flags and fingers held up with the number three.
People do not have anything on their heads.
The people in the first sentence have hats on verse the second people do not have anything on their heads.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6 x7.(n_number(x7) & card_eq_3(x7) & a_up(s2) & Manner(e2,s2) & with(e2,x7) & Actor(e2,x6) & v_hold(e2) & n_finger(x6) & with(e1,x5) & n_flag(x5) & a_american(s1) & Theme(s1,x5) & Actor(e1,x1) & v_pose(e1) & in(x1,x2) & subset_of(x4,x2) & n_hat(x4) & subset_of(x3,x2) & n_costume(x3) & n_people(x1))
exists x1 x3.(-all x2.(n_thing(x2) -> exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & on(x2,x3))) & n_head(x3) & of(x3,x1) & n_thing(x1) & n_people(x1))