man with no shirt on in a field.
A man building a snowman in a blizzard.
A man with no shirt  in a field cannot be building a snowman.
exists x1.(-exists s1 x2 x3 x4.(a_topic(x1) & with(x1,x2) & in(s1,x4) & n_field(x4) & Theme(s1,x3) & a_on(s1) & (x2 = x3) & n_shirt(x2)) & n_man(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_blizzard(x4) & Theme(e1,x3) & Actor(e1,x2) & v_build(e1) & n_snowman(x3) & (x1 = x2) & n_man(x1))