The sky appears clear.
It's not raining.
Most commonly when it is not raining, the sky appears clear.
exists e1 p1 x1.(n_sky(x1) & exists s1.(Theme(s1,x1) & a_clear(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_appear(e1))
exists x1.(n_thing(x1) & -exists e1.(Actor(e1,x1) & v_rain(e1)))