You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Article: There are a lot of public libraries in Britain. These libraries have more than one hundred and fifteen million books, not including those libraries of public schools. Public libraries not only lend books, music records but also help children, patients in hospitals and others to get special play readings, film shows and so on. The first public libraries were founded in about the year 1850. Today's public libraries usually have a reading-room, a lending room and a reference room. The greatest and most famous library in Britain is that of the British Library in London. It was founded in 1973 and has over 10, 000, 000 books. It has nearly every magazine, newspaper and book published in Britain and other parts across the world.
Answer: 10,000,000 or less.
Solution: How many books are there in the British Library?
Why? In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.

New input: Article: Dear Mrs.Denner, Over the past five months, your husband has been causing quite a commotion in our store. Our complaints against Mr.Denner are listed below: July 2:Set all the alarm clocks in house-wares to go off at 5-minute intervals . July 7: Made a trail of tomato juice on the floor leading to the women's restroom. August 4: Took a bag of _ from the candy shelf and handed out to the passing children to eat. September 14:Moved a "CAUTION--WET FLOOR" sign to a carpeted area. September 15: Set up a tent in the camping department and told other shoppers he'd invite them in if they would bring pillows and blankets from the bedding department. September 23:When a clerk asked if they could help him ,he began crying and screamed,"Why can't you people just leave me alone?" October 4: Looked right into the security camera and used it as a mirror while he picked his nose. November 10: While handling guns in the hunting department, he asked the clerk where the antidepressants were. December 3:Darted around the store while loudly humming the "Mission Impossible" theme. December 6:In the auto department, he practiced his "Madonna look" by using different sizes of funnels. December 18:Hid in a clothing rack and when people looked through, yelled "PICK ME!PICK ME!" December 21:When an announcement came over the loud speaker, he assumed a fatal position and screamed "OH NO!IT'S THOSE VOICES AGAIN!" December 23:Went into a fitting room , shut the door, waited a while, and then yelled very loudly,"Hey! There's no toilet paper in here!" Our video surveillance cameras recorded all these. Never once did our reminding and warning work and therefore we are forced to ban him from the store. Regards, Wal-Mart
Answer: Through the cameras of the market.
Solution:
How did the market get to know about Mr.Denner's strange behavior?