[ACTION-147] Delay in review of RDF mapping document

Hi!

Due to time limitations within the last two weeks, I didn't manage to do a
full review of the RDF mapping document.

I like to ask for a rescheduling of this action to May, 30th. This is the
same due date as for ACTION-148, which is Achille's action to do a review on
the same document.

Best,
Michael