[Zope] Ho do you access parent's parent folders?

hi, any one knows how to access methods or queries in the parent's parent's parent's subfolder? Root -----Folder1 ----------Sub1 --------------My_Qry ----------Sub2 ---------------otherfolder --------------------How_to_access_My_Qry_from_Sub1???? is there <dtml-var parent.parent..... type thing??? or do you have to call the parentobject method and assign it to some object before getting to it?