In this task, we ask you to write a question that asks about "event duration", based on a given sentence. The question will likely start with "How long". Your question should be answerable based on the common knowledge of how long certain events usually last. Don't create questions which have explicit mentions of answers in the text. Instead, it has to be implied from what is given. In other words, we want you to use "instinct" or "common sense". Note that the written questions are not required to have a single correct answer.

Q: Sentence: Durer's father died in 1502, and his mother died in 1513.

A: How long was his mother ill?
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Q: Sentence: Billy would put the bowl down and wait for Tumble to come up to the bowl to eat from it.

A: How long does it take to eat from the bowl?
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Q: Sentence: His son and successor, Caracalla, a great admirer, visited the tomb during his own reign.

A:
How long did he visit the tomb?
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