The sky is blue
A cloudy day looms overhead.
Clouds are not blue so during a cloudy day the sky would not be blue.
exists s1 x1.(n_sky(x1) & Theme(s1,x1) & a_blue(s1))
exists e1 s1 s2 x1.(a_overhead(s2) & Manner(e1,s2) & Actor(e1,x1) & v_loom(e1) & n_day(x1) & a_cloudy(s1) & Theme(s1,x1))