> [RSP] four uses of the word "entity" makes this a bit confusing,
> especially since the referenced entities are not always
> referring to the same entity.
Yeah...How about pulling the parenthetical up:
"the relying party can treat the entity presenting the assertion as an
entity that the SAML authority has associated with the entity identified in
the name identifier and associated with the claims in the assertion. The
confirming entity and the actual subject may or may not be the same entity."
-- Scott