Detailed Instructions: 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.
See one example below:
Problem: 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?
Explanation: In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.

Problem: Article: One day while shopping in a small town in southern California,it was my misfortune to be approached by a clerk whose personality conflicted with mine. He seemed most unfriendly and not at all concerned about my intended purchase. I bought nothing,and marched angrily out of the store. My hostility  toward that clerk increased with each step. On the outside,standing by the road,was a darkskinned young man in his early twenties. His expressive brown eyes met and held mine,and in the next instant a beautiful, dazzling  smile covered his face. I gave way immediately. The magnetic  power of that smile dissolved  all bitterness within me,and I found the muscles in my own face happily responding . "Beautiful day,isn't it?"I remarked,in passing. Then,I turned back."I really owe you a debt of gratitude ,"I said softly. His smile deepened, but he made no attempt to answer.A Mexican woman and two men were standing nearby.The woman stepped forward and volunteered, "Sir, but he doesn't speak English.Do you want me to tell him something?" In that moment I felt transformed .The young man's smile had made a big person of me.My friendliness and good will toward all mankind stood ten feet tall. "Thank you?" The woman seemed slightly puzzled. I gave her arm a friendly pat as I turned to leave."Just tell him that," I insisted."He'll understand.I am sure !" Oh, what a smile can do! Although I have never seen that young man again, I shall never forget the lesson he taught me that morning.From that day on, I became smile-conscious, and I practice the art anywhere and everywhere, with everybody. 
 Answer: The clerk treated him unkindly.
Solution:
Why did the author leave the store angrily?