Two kids in a green tree.
Two adults painting a tree green
The beings can not be both kids and adults at the same time.
exists s1 x1 x2.(a_topic(x1) & in(x1,x2) & n_tree(x2) & a_green(s1) & Theme(s1,x2) & n_kid(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_paint(e1) & n_green(x3) & of(x3,x4) & n_tree(x4) & (x1 = x2) & n_adult(x1) & card_eq_2(x1))