Re: Non-PK tables, blank nodes, and leanness

On Tue, Apr 24, 2012 at 1:44 PM, Richard Cyganiak <richard@cyganiak.de>wrote:

>   _:1 <IOU#BORROWER> "Alice".
>   _:1 <IOU#AMOUNT> 10.
>   _:2 <IOU#BORROWER> "Alice".
>   _:2 <IOU#AMOUNT> 10.
>
> As Juan observed during the call, this graph is non-lean. RDF Semantics
> tells us: “Non-lean graphs have internal redundancy and express the same
> content as their lean subgraphs.” [1] In other words, the graph above is
> semantically equivalent to this one:
>
>   _:1 <IOU#BORROWER> "Alice".
>   _:1 <IOU#AMOUNT> 10.
>

Richard - I may be wrong, but that is not my understanding of leanness.
Furthermore I don't think the two graphs you listed above are semantically
equivalent.

-David