You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Westminster_Abbey

Context:
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