RE: Digest URI's

Would the proposed algorithm assign the same digest URI to both the authors
(they are a husband and wife team) in the following fragment of serialised
RDF?

<?xml version="1.0"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns:DC="http://purl.org/dc/elements/1.0/">


<rdf:Description about="http://homepage/SmithFamily">
  <author>
     <rdf:Description>
        <surname>Smith</surname>
     </rdf:Description>
  </author>
  <author>
     <rdf:Description>
        <surname>Smith</surname>
     </rdf:Description>
  </author>
</rdf:Description>
</rdf:RDF>

Whilst the example is contrived, my concern is over the correctness of the
machine asserting identity with inadequate knowledge.

Brian McBride
HPLabs