missing rdf:type triples

Oops,  corrected URI's ...

Hi Dan,

We were able to fix our broken Euler [1].
We also played a bit with rule syntax ...
So we have for example [2]
<?xml version="1.0" encoding="UTF-8"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns:r="http://euler.org/">

<r:member r:source="mailto:jos.deroo.jd@belgium.agfa.com"
r:drain="http://www.agfa.com"/>
<r:member r:source="http://www.agfa.com" r:drain="http://www.w3.org"/>
<r:subscribed r:source="http://www.agfa.com"
r:drain="mailto:w3c-ac-forum@w3.org/"/>

<r:authenticated r:source="Person" r:drain="Mailinglist">
  <r:member r:source="Person" r:drain="Institution"/>
  <r:member r:source="Institution" r:drain="http://www.w3.org"/>
  <r:subscribed r:source="Institution" r:drain="Mailinglist"/>
</r:authenticated>
</rdf:RDF>

Now if we parse this we don't get rdf:type triples for the nodes
  <r:member r:source="Person" r:drain="Institution"/>
  <r:member r:source="Institution" r:drain="http://www.w3.org"/>
  <r:subscribed r:source="Institution" r:drain="Mailinglist"/>

You can actually see this much better with your Rudolf: RDFViz [3]
So we were wondering how this can be explained.

With kind regards,
Jos De Roo --- AGFA

[1] ftp://windsor.agfa.be/outgoing/RCEI/NET/euler/index.html
[2] ftp://windsor.agfa.be/outgoing/RCEI/NET/euler/authen.rdf
[3]
http://snowball.ilrt.bris.ac.uk/cgi-bin/rdf-dot/uri2gif?URI=ftp://windsor.agfa.b
e/outgoing/RCEI/NET/euler/authen.rdf