RE: [xml-dev] What is RDF for? (Was: What are Web Services for?)

John Cowan wrote:
> Almost true already.  Show me any random XML without mixed content
> in it, and I can interpret it as RDF for you.  It may not make much
> *sense* as RDF, but it will be legal, except for corner cases.

So like SOAP and REST, or XML and its infoset, RDF and XML are basically
isomorphic, right? So what is the argument for using RDF instead of plain
vanilla XML? In particular, wouldn't it make more sense to annotate the XML
schema (in a separate file, perhaps):

Instance:

<movie>
	<name>Jay and Silent Bob Strike Back</name>
	<director>Kevin Smith</director>
	...
</movie>

Annotation (of the schema used by above instance):

<element which="movie/name">
	<role>dc:Title</role>
</element>

<element which="movie/director">
	<role>dc:Creator</roel>
</element>

The advantages are the same as for REST (i.e. we stay completely within the
XML paradigm).

Matt