use xpath to select elements with a set of multiple attributes/values

I have an XML document that i need to strip out particular pieces of data

the xml document has a structure as follows:-

<a>
   <b select='yes please'>
       <c d='text1' e='text11'/>
       <c d='text2' e='text12'/>
       <c d='text3' e='text13'/>
       <c d='text4' e='text14'/>
       <c d='text5' e='text15'/>
   </b>
 </a>
<a>
   <b select='no thanks'>
       <c d='text1' e='text21'/>
       <c d='text3' e='text23'/>
       <c d='text5' e='text25'/>
   </b>
 </a>
<a>
   <b select='yes please'>
       <c d='text1' e='text31'/>
       <c d='text2' e='text32'/>
       <c d='text3' e='text33'/>
       <c d='text4' e='text34'/>
       <c d='text5' e='text35'/>
   </b>
 </a>
<a>
   <b select='no thanks'>
       <c d='text4' e='text41'/>
       <c d='text3' e='text43'/>
       <c d='text5' e='text45'/>
   </b>
 </a>

i need to select only those /a/b element groups that have d attribute = 'text1' and d attribute = 'text4', once i have identified these sub documents i want to get the value of the e attributes with d attribute value 'text5'

hope thats clear

Cheers

DD