XPath expression to select nodes between a defined sequence of preceding and succeeding nodes

I've got the following structured XML file:

   <w:document>
开发者_Go百科      <w:body>
        <w:p>
           <w:r>
              <w:t/>
           </w:r>
        </w:p>
        <w:p>
           <w:r>
              <w:t/>
           </w:r>
        </w:p>
        <w:p>
           <w:r>
              <w:instrText/>
           </w:r>
        </w:p>
        <w:p>
           <w:r>
              <w:t/>
           </w:r>
        </w:p>
        <w:p>
           <w:r>
              <w:instrText/>
           </w:r>
        </w:p>
        <w:p>
           <w:r>
              <w:t/>
           </w:r>
        </w:p>
     </w:body>
  </w:document>

and I'm trying desperately to find an XPath expression to select all <w:t> nodes that are between two <w:instrText> nodes. <w:t> nodes basically appear freely all around the XML document, but I'm only interested in those between two <w:instrText> nodes.

Any help is greately appreciated.

I'm trying desperately to find an XPath expression to select all <w:t> nodes that are between two <w:instrText> nodes

/w:document/w:body/w:p/w:r/w:instrText/following::w:t
      [count(.|/w:document/w:body/w:p/w:r/w:instrText/preceding::w:t) =
       count(/w:document/w:body/w:p/w:r/w:instrText/preceding::w:t)]

Node set intersection expression

Is it not as simple as: //x/t ?