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I have successfully been able to being the systematic transformation process of EAD and MARC to RDF/XML, and consequently been able to literally illustrate the resulting triples. [1, 2] From the blog posting [3]:

  The resulting images are huge, and the astute/diligent reader
  will see a preponderance of literals in the results. This is not
  a good thing, but it all that is available right now.
 
  On the other hand the same astute/diligent reader will see the
  root of the RDF/XML pointing to a meaningful URI. This URI will
  be resolvable in the near future via content negotiation. This is
  a simple first step. The next steps will be to apply this process
  to an entire collection of EAD files and MARC records. After that
  the two other things can happen: 1) the original metadata files
  can begin to include URIs, and 2) the XSL used to process the
  metadata can employ a more standardized ontology. It is not an
  easy process, but it is a beginning.

  Right now, something is better than nothing.

[1] EAD illustration- http://sites.tufts.edu/liam/files/2013/12/hou00096.png
[2] MARC illustration - http://sites.tufts.edu/liam/files/2013/12/003078076.png
[3] blog posting - http://sites.tufts.edu/liam/2013/12/06/illustrating-rdf/


Eric Morgan