Looking for a basic example showing the use of Entity Framework with a WCF service

Question

Can anyone point out a sample or two that demonstrate the use of Entity Framework and a WCF service? My data will be stored in SQL Server 2008 and accessed via a WCF service. I'd like a basic sample that shows how to build the data model using the WCF service and how to update the data when changes occur (also via WCF).

Thanks!