In the RDF recommendation, targets of the graph can be pieces of text instead of resources; those pieces of text are called literals. Though this is syntactically useful in RDF documents (being able to write directly some text rather than storing it in another resource), I think handling it as an exception to the model is not appropriate, and that there is a cleaner way of doing it: the piece of text probably has a fragment identifier2and so the literal node could be replaced by a standard URI node in the RDF graph. Note that this alternative is compatible with the recommendation since it uses a subset of the model.