The sky is blue and clear.
It is not raining.
The color and clarity of the sky does not imply that it is not raining.
exists s1 s2 x1.(n_sky(x1) & Theme(s2,x1) & a_clear(s2) & Theme(s1,x1) & a_blue(s1))
exists x1.(n_thing(x1) & -exists e1.(Actor(e1,x1) & v_rain(e1)))