multiple xpath queries ?

[FOX GBLACK]

Hi all,
I have a two xpath queries.
1. xPathQueryForProcess = "//proceses/[EMAIL PROTECTED]'533']";
   this query returns proceses for a person incharge(his id is 533).
2. xPathQueryForActivities = 
"//proceses/process/subprocess/[EMAIL PROTECTED]'533']";
   this query returns activities for a person incharge with the same id, 
533).

I need to perform both of the quries togeather on a collection or a document 
where the document looks somewhat like the following.

xml file
---------
<project>
 <process incharge=533>
    <name>something</name>
    <subprocess>
       <activity incharge="533">some activity</activity>
       <activity incharge="500">some activity</activity>
       <activity incharge="533">some activity</activity>
    <subprocess>
  </process>
 <process incharge=533>
    <name>something</name>
    <subprocess>
       <activity incharge="511">some activity</activity>
       <activity incharge="500">some activity</activity>
       <activity incharge="533">some activity</activity>
    <subprocess>
  </process>
<project>
is there any way i can join the above two xpath queries? any suggestions?
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