Re: Test turtle-syntax-bad-struct-07 - blank nodes in predicates

Actually, the Turtle grammar does allow it and that's why there needs to be
some kind of normative reference to the additional constraint from RDF
Concepts.


On Sat, May 18, 2013 at 10:11 PM, Gregg Kellogg <gregg@greggkellogg.net>wrote:

> On May 18, 2013, at 9:49 PM, Alex Milowski <alex@milowski.com> wrote:
>
> This test has the triple:
>
>    <http://example/s> _:p <http://example/o> .
>
> I can't see where in the turtle specification is says that you can't have
> a blank node as a predicate.
>
> It certainly makes sense to have this constraint.
>
>
> Of course, the Turtle grammar doesn't allow it, but that's not normative.
> What is is the RDF data model as defined in RDF Concepts, in particular the
> definition of a triple [1].
>
> Gregg
>
> [1] http://www.w3.org/TR/rdf11-concepts/#section-triples
>
> --
> --Alex Milowski
> "The excellence of grammar as a guide is proportional to the paucity of the
> inflexions, i.e. to the degree of analysis effected by the language
> considered."
>
> Bertrand Russell in a footnote of Principles of Mathematics
>
>


-- 
--Alex Milowski
"The excellence of grammar as a guide is proportional to the paucity of the
inflexions, i.e. to the degree of analysis effected by the language
considered."

Bertrand Russell in a footnote of Principles of Mathematics