Complex sentence: He delivers the disc Artemis gave him to Butler, Artemis'bodyguard, restoring Butler's memory and allowing the two of them to come up with a plan to rescue Artemis and Holly Short from Opal Koboi, in the Eleven Wonder Exhibition in the Lower Elements.
Split into simpler sentences: He delivers the disc Artemis gave him to Butler, Artemis' bodyguard. They rescue Artemis and Holly Short from Opal Koboi, in the Eleven Wonder Exhibition in the Lower Elements.