Linq to XML. Select particular descendants.

Hi All,

I have the following XML

               <XMLNODE_4>

               XMLNODE_4>

I have got the XElement of XMLNODE_2 in an object. When i execute 

xmlnode2.Descendants("XMLNODE_3");

I get all the XMLNODE_3 tags ie 5 (includes the nodes under XMLNODE_4 also)

How can I get the XMLNODE_3 nodes which are only under XMLNODE_2 and NOT under XMLNODE_4