Editorial PR about the seminal example

Hi all,

I just pushed a pull request amending the discussion about the seminal 
example (§A.2):

https://github.com/w3c/rdf-star/pull/124

PREVIEW: https://github.com/w3c/rdf-star/pull/124


I don't think it requires call-time, but please express your concern if 
you have any, by commenting on the PR, replying to this email, or 
bringing it up during the next call.

Unless there are objections, I will merge this PR on the 10th or March.

   best