Example 1:
No intelligent person who drinks to excess also eats to excess.
I am stuck on deciding whether this means
a) $\forall x(Ix \implies -(Dx \lor Ex)$
or
b) $\forall x(Ix \land Dx \implies -Ex).$
Example 2:
None of the paintings is valuable except the battle pieces.
I think that what this is saying (using intuition) is that, if you give me a Painting then it is not Valuable unless you give me a Battle piece in which case it is Valuable; thus, in symbols:
c) $\forall x(Px \implies -Vx) \lor \forall x(Bx \implies Vx).$
Alternatively, it could be closer to Example 1; thus, in symbols:
d) $\forall x(Px \implies -(Vx \lor Bx)).$
Or I could very well be out to lunch on all of these translations.