A man builds a sand castle as children enjoy the sun in the background.
The sky is dark and cloudy.
The sun is not in the background of a dark and cloudy day.
exists e1 p1 x1 x2 x3 x5 x6.(n_background(x6) & n_sun(x5) & exists e2 x4.(Theme(e2,x5) & Actor(e2,x4) & v_enjoy(e2) & in(x5,x6) & n_child(x4)) & as(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_castle(x2) & of(x2,x3) & n_sand(x3) & n_man(x1))
exists s1 s2 x1.(n_sky(x1) & Theme(s2,x1) & a_cloudy(s2) & Theme(s1,x1) & a_dark(s1))