RDFa and RDF

Hi RDFa'ers,

  I still have a tiny but (to me) important question about RDFa.

  First,  it  seems a great idea that I can annotate my XHTML document
  with  RDF,  even better, I can annotate each individual element with
  RDF,  can  make  elements  being  the  subject  or  object  of  RDF
  statements.  Wow.  I  even  can  make  RDF  statements  unrelated to
  elements on the page. Wow.

  Okay, how do I represent such structures in an API/triple store?

  Will the XML-elements become XML-Literals? What for the subjects?
  Are   XPointer-expressions  usingthe  document  as  their  root  an
  identifier  for  subjects?  I worry, because I need to represent the
  XML+RDFa  somehow  in  a  triple  store  in  order to to e.g. SPARQL
  queries.

  Maybe  I  overlooked  something,  but  I  never  found this relation
  explained.

Kind regards,

  Max Völkel
--
Dipl.-Inform. Max Völkel, Universität Karlsruhe / FZI
            nepomuk.semanticdesktop.org
voelkel@fzi.de   +49 721 9654-854   www.xam.de