Given the task definition, example input & output, solve the new input case.
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.
Output: who has the maximum number of followers on instagram
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.

New input case for you: A central business district (CBD) is the commercial and business centre of a city. In larger cities, it is often synonymous with the city's 'financial district'. Geographically, it often coincides with the 'city centre' or 'downtown', but the two concepts are separate: many cities have a central business district located away from its commercial or cultural city centre or downtown.
Output:
why is the cbd found in the centre of the city