Clearly, Ludwig will go away... but is the use of [void:Linkset](http://www.w3.org/TR/void/#linkset) (below) the correct approach?

From the VoID site:
> VoID also allows the description of RDF links between datasets. An RDF link is an RDF triple whose subject and object are described in different datasets.

Is the idea to just have the VoID description at OpenfMRI point to the VoID description on S3 and vice versa?