RE: DATATYPES: mental dump.

> Thus, given
> 
>    _X --p:weightKg--> "14" 
>    ...
> 
> The value "14" in the first two cases are interpreted
> as strings ...

Or perhaps a literal that has no type whatsoever attached
to it should default to rdfs:Literal. I guess we don't
want to assert any XML Schema interpretation by RDF itself
(though an application may treat all untyped literals as
xsd:string values).

Patrick