Given the task definition and input, reply with output. This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

Passage: At the east end of the Lady Chapel is a memorial chapel to the airmen of the RAF who were killed in the Second World War. It incorporates a memorial window to the Battle of Britain, which replaces an earlier Tudor stained glass window destroyed in the war. Question: The window for the Battle of Britain replaced what that was destroyed?
Tudor stained glass window