JSON-LD Context for Containers?

As per 5.2.1.1, Containers are RDF Sources.  As per 4.3.2.3, LDP servers
MUST respond to JSON-LD requests for RDF Sources.

Shouldn't we provide a JSON-LD context to use for this? Or must server
implementers figure this out by themselves, and thus require clients to
process the response as JSON-LD not just JSON.  It seems like a missed
opportunity if that's what is required.

In:

https://lists.w3.org/Archives/Public/public-linked-json/2014Jul/0053.html

Sandro and Gregg discuss where this should go... but it's not available
there, and there's no reference to it in the specification (or anywhere
that I can find).

Pointers please?

Rob


5.2.1.1 Each Linked Data Platform Container must also be a conforming
Linked Data Platform RDF Source.

4.3.2.3 LDP servers must respond with a application/ld+json representation
of the requested LDP-RS when the request includes an Accept header, unless
content negotiation or Turtle support requires a different outcome
[JSON-LD].


-- 
Rob Sanderson
Information Standards Advocate
Digital Library Systems and Services
Stanford, CA 94305