Two kids in a green tree.
The kids are outside.
The tree could be inside or outside.
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 s1 x1.(n_kid(x1) & Theme(s1,x1) & a_outside(s1))