RDF Schema for XML Schema Components

... sorry, there was an error in my previous email. i ment XML Schema 
Structures instead of Datatypes

Hi!

I'm looking for a RDFS ontology for XML Schema components as described in 
W3C specification (Structures):

·       Simple type definitions
·       Complex type definitions
·       Attribute declarations
·       Element declarations

·       Attribute group definitions
·       Identity-constraint definitions
·       Model group definitions
·       Notation declarations

·       Annotations
·       Model groups
·       Particles
·       Wildcards
·       Attribute Uses

is there any available i could re-use?

thanks!

oliver