So the question is:
How to get Derkeethus out of the cave?
and I flagged the answer by E.N (currently the one at the bottom) as 'not an answer' because I can't see how it answers the question being asked. It amounts to Q: "How do I get Derkeethus out of the cave?" A: "Get him out of the cave".
Am I missing something here? If I am, could someone please point it out to me so I can make sure not to make more unhelpful flags for this reason?