Before you solve this question, solve The Two Gatekeepers
Before you, Merlin and your friend, Albert reach the real exit, now you see two doors guarded by one gatekeeper. You know that you can't fight him and win (he is HUGE). You know that one door leads to the exit, and the other leads to death (again?), but you don't know which is which. You don't know whether he lies or he tells the truth. You can only ask ONE question
Now Albert starts crying. "There was two. Now there is ONE only!" he said, and then continued crying.
You try to think of a question (while ignoring the cries). Does a question exist so that you can leave peacefully?