3.8.1 other?

[lisp]

there should be some sort of "content" operator which yields the graph associated with the timestamp triple.

• "timestampContent"?

[greenTara]

Like other data structures, it is convenient to have functions which return various parts of the structure.

There are several important parts to a timestamped graph

• timestamp triple
• default graph (with or without the timestamp triple?)
• named graph

The named graph has parts as well, i.e. its name and its content.