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:
2008_Summer_Olympics_torch_relay

Context:
The Olympic Flame is supposed to remain lit for the whole relay. When the Torch is extinguished at night, on airplanes, in bad weather, or during protests (such as the several occasions in Paris), the Olympic Flame is kept alight in a set of 8 lanterns.[citation needed]

Question:
In what is the torch flame kept lit when the torch must be off?

lanterns.