In this task, we ask you to write an answer to a question that involves “event duration", based on a given sentence. Here, event duration is defined as the understanding of how long events typically last. For example, “brushing teeth”, usually takes a few minutes. Note that a lot of the questions could have more than one correct answer. We only need a single most-likely answer. Please try to keep your "answer" as simple as possible. Concise and simple "answer" is preferred over those complex and verbose ones.
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Question: Sentence: This approach has been echoed by Lev Landau and Evgeny Lifshitz, and others, and has become standard. 
Question: How long did it take to become standard?

Answer: 2 years.


Question: Sentence: Durer's father died in 1502, and his mother died in 1513. 
Question: How long was his mother ill?

Answer: 6 months.


Question: Sentence: By the beginning of the fourth century the Algarve had a bishop in place, based in Faro. 
Question: How long did the bishop remain in Faro?

Answer:
10 years.


