how to write such xquery?

Suppose I have a document as follows:

 

<a ano="a001">

   <b bno="b001">

       <c cno="c001"/>

       <d dno="d001"/>

       <d dno="d002"/>

   </b>

   <b bno="b002">

       <c cno="c002"/>

       <d dno="d002"/>

   </b>

</a>

 

I would like to write a query to retrieve those elements from top to
down that has sub element <d> whose dno = "d002". That is, I want the
result like this:

 

<a ano="a001">

   <b bno="b001">

       <c cno="c001"/>

       <d dno="d002"/>

   </b>

   <b bno="b002">

       <c cno="c002"/>

       <d dno="d002"/>

   </b>

</a>

 

How to write such a query in a simple XQuery? Can I use filter function?

Thanks in advance.