There is a (fairly old…) document dealing with that:
https://www.w3.org/Submission/2007/SUBM-rdfsource-20071018/
I am not sure whether the project was continued by the authors or not. It did not lead to any followup at W3C.
Ivan
> On 9 Jun 2016, at 17:44, Martynas Jusevičius <martynas@graphity.org> wrote:
>
> Hey,
>
> we have a use case where we need an RDF format in XML syntax that
> 1. supports named graphs
> 2. has a convenient structure for XSLT transformations
>
> RDF/XML fails at #1, TriX fails at #2.
>
> I suggest extending RDF/XML with a concept of named graph, similarly
> to how TriG extends Turtle:
>
> <rdf:RDF>
>
> <!-- default graph -->
> <rdf:Description>
> <foaf:mbox rdf:resource="mailto:semantic-web@w3.org"/>
> </rdf:Description>
>
> <!-- named graph -->
> <rdf:Graph rdf:name="https://www.w3.org/TR/rdf-syntax-grammar/">
>
> <rdf:Description rdf:about="https://www.w3.org/TR/rdf-syntax-grammar/">
> <dct:title>RDF 1.1 XML Syntax</dct:title>
> </rdf:Description>
>
> </rdf:Graph>
>
> </rdf:RDF>
>
> As far as I can see, the only required additions would be rdf:Graph
> element and rdf:name attribute.
>
> Has anyone attempted something like this? I would be willing to try to
> implement a writer for Jena, to start with.
>
>
> Martynas
> atomgraph.com
>
----
Ivan Herman, W3C
Digital Publishing Lead
Home: http://www.w3.org/People/Ivan/
mobile: +31-641044153
ORCID ID: http://orcid.org/0000-0003-0782-2704