I am experimenting with a internal data structure to handle RDF triples,
including:

  * automatic generation of internal id's
  * language property for resources
  * every literal gets an internal id
  * automatic generation of reified statements (in fact the statement
id)
  * Marking of statements as facts, if not only reified
  * Support of multipple properties with the same name for the same
subject
  * Support for bags and values
  * Support for aboutEachPrefix

I am going forward with the schema specification now. The short term
goal is a (web) interface for adding data, using a schema.