representing probability in RDF

Hello Natasha and Danny (and all),

I've been working on a framework for representing probabilistic relations in
RDF,
and would like to release a new version of my proposal.

http://www.w3.org/2004/09/06-Yoshio/onProbabilisticRelations.xml

(It requires MathPlayer to get the correct view, for it uses the MathML)
MathPlayer: http://www.dessci.com/en/products/mathplayer/

The main features are:

* Predicate centric representation of Nary relationship
* Simple virtualization (reification) with prob:Clause
* Use of prob:ProbabilisticSatement (and others) to represent probabilistic
relationship
(unlike the quad approach which directly attaches a probability to a
statement)
* Introduction of prob:Probability to represent probability

I would be very grateful if you could read it and give me any comments,
which will lead to a public discussion.

Best,
Yoshio Fukushige
fuku@w3.org