Bind Entity Framework Include result to DataGrid

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C#

Silverlight

Gridview

, +

Hey guys

I'm using EF and some related tables and I'm supposed to get the result from all of them and put it on a grid. The tables are Tara(ID, Name), Judet(ID,ID_Tara, Name), Oras(ID, ID_Judet, Name), CodPostal(ID, ID_Oras, CodPostal), Adresa(ID, ID_CodPostal, ID_Oras, Detalii). I hope you understand the relationship betwen them.
Now I must write a query with the parameter ID(Adresa) and bind the result to the datagrid and I must use Include(). I have the example below:

public List<Adresa> GetFullAddress(int id)
        {
            var adresa = be.Adresa.Include("CodPostal.Oras.Judet.Tara").Where(a => a.ID == id);
            return adresa.ToList();
        }

The column definitions are the following
What I don't know is what to enter as FieldName except for the first one because the other are in the related tables

<grid:AgDataGrid.Columns>
                    <grid:AgDataGridTextColumn TextWrapping="Wrap" FieldName="Detalii" MinColumnWidth="70" HeaderStyle="{StaticResource ColumnHeaderStyleBlue}"/>
                    <grid:AgDataGridTextColumn TextWrapping="Wrap" FieldName="CodPostal" MinColumnWidth="70" HeaderStyle="{StaticResource ColumnHeaderStyleBlue}"/>
                    <grid:AgDataGridTextColumn TextWrapping="Wrap" FieldName="Oras" MinColumnWidth="70" HeaderStyle="{StaticResource ColumnHeaderStyleBlue}"/>
                    <grid:AgDataGridTextColumn TextWrapping="Wrap" FieldName="Judet" MinColumnWidth="70" HeaderStyle="{StaticResource ColumnHeaderStyleBlue}"/>
                    <grid:AgDataGridTextColumn TextWrapping="Wrap" FieldName="Tara" MinColumnWidth="70" HeaderStyle="{StaticResource ColumnHeaderStyleBlue}"/>
                </grid:AgDataGrid.Columns>

I am using services

private void bsc_GetFullAddressCompleted(object sender, GetFullAddressCompletedEventArgs e)
        {
            gridBorderouTara.DataSource = e.Result;
        }

I solved the problem using stored procedure but I am supposed to do it this way :(
Thank you and I hope I gave enough information