dealing with strings in RDF

Hi:

Does 

	<http://foo.ex/a#b> <http://foo.ex/a#b> "aa" .

rdf-entail

	<http://foo.ex/a#b> <http://foo.ex/a#b> "aa"^^http://www.w3.org/2001/XMLSchema#string .

I believe that it is up to the RDF Core working group to provide an answer
to this question. 

Peter F. Patel-Schneider
Bell Labs Research
Lucent Technologies