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:
American_Idol

Context:
During the top 11 week, due to a mix-up with the contestants' telephone number, voting was repeated on what was normally the result night, with the result reveal postponed until the following night.

Question:
During what week was there a problem with voting?

top 11 week