Two kids in a green tree.
Two kids swimming in the ocean.
The two kids cannot be simultaneously in a green tree, and swimming in the ocean.
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 x1 x2 x3.(n_ocean(x3) & a_topic(x1) & in(x1,x3) & n_swimming(x1) & of(x1,x2) & n_kid(x2) & card_eq_2(x1))