[xsl] Template priority

[Brian Grainger <granam@xxxxxxx>]

I need to apply two different templates respectively against two different 
elements, both of which unfortunately have the same name, but different 
parents and attribute sets.

The input xml is of the general form

<root>
  <x>
    <z bunny="bugs farmer="fudd"/>
  </x>
  <y>
    <z birdy="tweety" puddytat="sylvester"/>
  </y>
</root>

What would be the recommended way to differentiate the two templates? 
Parentage? Priority? Mode? Something else?

Any pointers greatly appreciated.

Regards,
Brian


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