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.

Example Input: Sentence: In London at mid-afternoon yesterday, Ratners's shares were up 2 pence (1.26 cents), at 260 pence ($1.64).
Example Output: How long did Ratners's shares stay up?

Example Input: Sentence: The core of our strategy is to lead in technology and attack the high-performance segments of the market, said John Kelly, senior vice president in charge of IBM's technology group.
Example Output: How long did John Kelly speak?

Example Input: Sentence: The Vice President's task force was just getting under way when the 9/11 attack occurred.
Example Output:
How long did it take to clean up after the 9/11 attack?

