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.

Q: Article: Although man has known asbestos for hundreds of years, it was not until 160 years ago that it was mined for the first time on the North American continent. H.W.Johns, owner of a New York City Supply Shop for roofers,was responsible for the opening of that first mine. Mr. Johns was given a piece of asbestos which had been found in Italy. He experimented with the material and then showed its surprising powers to his customers. After putting on a pair of asbestos gloves,which looked much like ordinary work gloves,he took red-hot coals from the fireplace and played with them in his hands. How astonished the customers were to discover that he was not burned at all. You can well imagine that he had increased business in asbestos roofing materials. However,because it was very expensive to transport them from Italy to the United States, Mr. Johns sent out a young scientist to seek a source nearer home. This young man found great vein, in the province of Quebec in Canada. Ever since 1881 Quebec has led the world in the production of this unusual mineral,which is made up of magnesium, silicon, iron, and oxygen. When it is mined, the asbestos is heavy, just as you would expect a mineral to be. When it is separated,a strange thing happens; the rock breaks down into fine, soft, soapy fibers. Scientists do not know why the rock can be separated easily into threads ,but they have found thousands of uses of this fireproof material, of the so- called "cloth of stone."
Answer: A new roofing material

A: Which title best expresses the main idea of this passage?
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Q: Article: In white shirt, blue pants, black cloth shoes and two pigtails, Jingqiu gives off an air of great "pure beauty" in Zhang Yimou's new movieUnder the Hawthorn Tree, which tells the story of the sad romance of Jingqiu and a handsome young man named Laosan set at the end of the "cultural revolution" (1966-- 1976). Before it was released, moviegoers foresaw what this "pure beauty" could be. Director Zhang complained of how long it had taken him to find the right girl for the part of Jingqiu -- a character so innocent. She believes that simply lying on the same bed as a man will make her pregnant. It was 18-year-old Zhou Dongyu who stood out from the crowd. According to Zhang, Zhou has "eyes that are clear like a fountain on a mountainside". Born to an ordinary worker's family, the Shijiazhuang girl was in her final year of high school and working hard for a place in an art college. "If you have fair skin and clear eyes, as Jingqiu does, it is easy to look pure. Girls today wear so many jewels and make-up--that's the reason Zhang was not interested," said Du Yanlai, 17, of Chengdu. While some teenagers consider such "pure" beauty _ , others believe that it speaks of something soulful. Purity is all about an innocence that shines through from within, thinks 16-year-old Tan Mengxi of Nanjing. "Being pure can be simple, not having complicated thoughts and being inexperienced. However, it doesn't mean an ignorant or native person. So, a person is pure in his or her nature if he or she is always enthusiastic and able to deal with difficult matters independently. This purity doesn't pass with time, "she said.
Answer: Being simple, enthusiastic and able to manage things alone.

A: What's the real purity according to Tan Mengxi?
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Q: Article: Dear Maya Shao-ming, To me, June 6, 1990 is a special day. My long-awaited dream came true the minute your father cried, "A girl!" You are more than just a second child, more than just a girl to match our boy. You, little daughter, are the link to our female line, the legacy of another woman's pain and sacrifice 31 years ago. Let me tell you about your Chinese grandmother. Somewhere in Hong Kong, in the late fifties, a young waitress found herself pregnant by a cook, probably a co-worker at her restaurant. She carried the baby to term, suffered to give it birth, and kept the little girl for the first three months of her life. I like to think that my mother--your grandmother--loved me and fought to raise me on her own, but that the daily struggle was too hard. Worn down by the demands of the new baby and perhaps the constant threat of starvation, she made the painful decision to give away her girl so that both of us might have a chance for a better life. More likely, I was dropped at the orphanage (M JLR) steps or somewhere else. I will probably never know the truth. Having a baby in her unmarried state would have brought shame on the family in China, so she probably kept my existence a secret. Once I was out of her life, it was as if I had never been born. And so you and your brother and I are the missing leaves on a family tree. Do they ever wonder if we exist? Before I was two, I was adopted by an Anglo couple. Fed three square meals a day, I grew like a wild weed and grasped all the opportunities they had to offer--books, music, education, church life and community activities. In a family of blue-eyed blonds, though, _ . Whether from jealousy or fear of someone who looked so different, my older brothers sometimes teased me about my unpleasing skin, or made fun of my clumsy walk. Moody and impatient, burdened by fears that none of us realized resulted from my early years of need, I was not an easy child to love. My mother and I conflicted countless times over the years, but gradually came to see one another as real human beings with faults and talents, and as women of strength in our own right. Lacking a mirror image in the mother who raised me, I had to seek my identity as a woman on my own. The Asian American community has helped me regain my double identity. But part of me will always be missing: my beginnings, my personal history, all the delicate details that give a person her origin. Nevertheless, someone gave me a lucky name "Siu Wai." "Siu" means "little," and "Wai means "clever." Therefore, my baby name was "Clever little one." Who chose those words? Who cared enough to note my arrival in the world? I lost my Chinese name for 18 years. It was Americanized for convenience to "Sue." But like an ill-fitting coat, it made me uncomfortable. I hated the name. But even more, I hated being Chinese. It took many years to become proud of my Asian origin and work up the courage to take back my birth-name. That, plus a little knowledge of classroom Cantonese, is all the Chinese culture I have to offer you. Not white, certainly, but not really Asian, I try to pave the way between the two worlds and bridge the gap for you. Your name, "Shao-ming," is very much like mine--"Shao" means "little." And "ming" is "bright," as in a shining sun or moon. Whose lives will you brighten, little Maya? Your past is more complete than mine, and each day I cradle you in your babyhood, generously giving you the loving care I lacked for my first two years. When I pat you, I comfort the lost baby inside me who still cries for her mother. Sweet Maya, it doesn't matter what you "become" later on. You have already fulfilled my wildest dreams. I love you, Mommy
Answer: Her female line was well linked.

A:
Why is June 6. 1990 a special day for Mommy?
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