Beautiful blue sky and yellow flowers.
The sky is blue and there isn't any rain.
A beautiful blue sky doesn't mean rain.
exists s1 s2 s3 s4 x1 x2 x3.(n_flower(x2) & a_yellow(s4) & Theme(s4,x2) & a_.(s3) & Theme(s3,x2) & n_sky(x1) & a_blue(s2) & Theme(s2,x1) & (x1 = x3) & ne_nam_beautiful(x3) & subset_of(x2,s1) & subset_of(x1,s1) & a_topic(s1))
exists s1 x1 x2.(n_sky(x1) & -exists p1.all x3.(n_rain(x3) -> (x2 = x3)) & Theme(s1,x1) & a_blue(s1))