In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.
Example: This list contains the top 25 accounts with the most followers on the social photo-sharing platform Instagram. As of May 2018, the most followed user is Instagram's own account, with over 235 million followers. Selena Gomez is the most followed individual, with over 137 million followers. Ten accounts have exceeded 100 million followers on the site.
Example solution: who has the maximum number of followers on instagram
Example explanation: The answer is talking about the Instagram accounts that have the most followers. The question asking about the maximum number of followers. So this is a good example.

Problem: The Old Kingdom, in ancient Egyptian history, is the period in the third millennium (c. 2686 -- 2181 BC) also known as the' Age of the Pyramids' or' Age of the Pyramid Builders' as it includes the great 4th Dynasty when King Sneferu perfected the art of pyramid building and the pyramids of Giza were constructed under the kings Khufu, Khafre and Menkaure. Egypt attained its first continuous peak of civilization -- the first of three so-called 'Kingdom' periods (followed by the Middle Kingdom and New Kingdom) which mark the high points of civilization in the lower Nile Valley.
Solution: how long did the old kingdom period of egyptian civilization last