Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
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?
Reason: In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.

Now, solve this instance: Article: Buckingham Palace is where the Queen lives. It is the Queen's official and main royal London home.Buckingham Palace was originally a splendid house built by the Duke of Buckingham for his wife. George IV began changing it into a palace in 1826. It has been the official London home of Britain's royal family since 1837. Buckingham Palace is also an office and used for the administrative work of the royal family. When the Queen is at home you can see her royal flag (the Royal Standard) flying from the flag pole on top of Buckingham Palace. The flag is divided into four equal parts. The first and fourth parts represent England and contain three gold lions waking on a red field; the second part represents Scotland and contains a red lion standing on a gold field; the third part represents Ireland and contains the gold coat of arms of Ireland on a blue field. In flag protocol , the Royal Standard which must only be flown from buildings where the Queen is present is supreme . It flies above the British Union Flag (the Union Jack ), and other British flags. It never flies at half mast. The guards of the Palace wear red jackets and tall, furry hats. When the first guards come on duty, there is a ceremony called the Changing of the Guard. A familiar sight at Buckingham Palace is the Changing of the Guard ceremony that takes place in the open space in front of it each morning. The Palace has around 750 rooms, including 19 state rooms, 52 royal and guest bedrooms, 78 bathrooms, 92 offices, a cinema and a swimming pool. It also has its own post office and police station. About 400 people work at the Palace, including servants, chefs, footmen, cleaners, gardeners, electricians, and so on. More than 50,000 people come to the Palace each year as guests to dinners, receptions and Royal Garden Parties.
Answer: George IV's wife.
Student:
For whom was the original Buckingham Palace built?