parsing with dom4j

Question

I am successfully retrieve the data of response using xpath expression /abcde/response from the xml ,

<abcde>
            <response>000</response>
</abcde>

But couldnt retrieve the data of response from the same xml but with some additional data

<abcde version="8.1" xmlns="http://www.litle.com/schema"
      response="0" message="Valid Format">
            <response>000</response>
</abcde>

What am i doing wrong ?