CAML Query

Hi..

I Created 6 Lists with the following Field Names..

Country - ID, CountryName
Company - ID, CompanyName,Country ID
Process Group - ID, ProcessGroupName, Company ID
Process Area - ID, ProcessAreaName, ProcessGroup ID
Sub Process Area - ID, SubProcessAreaName, ProcessArea ID
Sub-Sub Process Area - ID, Sub-SubProcessAreaName, SubProcessArea ID

I want a Query in CAML that if i select Country than all its Sub-Sub Process Area Name should display (Note: there is no direct relation b/w Country and Sub-Sub Process Area )
 

Ravindranath