I waited for @Martin answer because there are more solutions for this problem. Here is another one (at least it works with ObjectContext API so it should work with DbContext API as well).
There is a lot of information to be found on this topic; on stackoverflow I found Ladislav Mrnka's insights particularly helpful. More on the subject can also be found here: NTier Improvements for Entity Framework and here What's new in Entity Framework 4?
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.