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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.
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Article: No one knows exactly when jazz was invented, or by whom. But it is said that it began in the early 1900s. Jazz was a new kind of music, for America and the world, and New Orleans was its birthplace. Who were the jazz pioneers? Most were blacks. This music was not written down, and at first only blacks played it. It was hard for white musicians to learn the new style. But soon they, too, were playing jazz. The popularity of this music spread. From New Orleans, it traveled up the Mississippi to Chicago, then to Kansas City and New York. By the 1920s, there were many jazz musicians, both black and white. Many of them were famous. One man was better than the rest. His name was Louis Armstrong. Louis Armstrong was a born musician. He was not only talented but also hard-working. He also had a good sense of humor and a big, good-natured smile. These personal qualities were valuable in his rise to fame. After he became famous, he traveled around the world. It seemed that everyone wanted to hear Louis play. But life was not always easy, especially at the beginning. Louis Armstrong was born in 1900 in New Orleans. His father never went to school and his mother could hardly read. When Louis was still a kid, his parents separated, and Louis lived with his mother. How hard their life was can readily be imagined. And yet Louis smiled through everything. He later wrote, "My whole life has been happiness. Life was there for me and I accepted it. Whatever happened has been beautiful to me. I love everybody."
Answer: His talent and hard work.
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What made Louis Armstrong become the best jazz musician?

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Article: Koala bears as pets might be appealing to many of us. However, there are quite a few points to consider even before thinking of adopting one. Koala bears are one of the most lovely Australian animals. In certain cases where the koala has been raised by hand, they have turned out to be quite affectionate pets. These people tied a piece of fur to a pillow and placed it beside a joey (a baby kola) as a substitute for the mother koala. This trick seemed to work well with the baby koala. However, it is a known fact that human handling causes stress to koalas. In my personal opinion, this aspect clouds the fact that koala bears can be tamed . In Australia the koala is a priority animal as far as conservation status assessment is concerned. It was hunted to near extinction for its fur. In fact the koala had been wiped out from South Australia in the 1920s. However, rehabilitation efforts have brought the animal back in the state. As for the Australia government, the koala is not a threatened animal, but the US government does list the koala as one. Although they may live in 40 to 60 kinds of eucalyptus trees, they prefer only 10 to 14 specific kinds. Koalas sleep for most part of the day, which is about 16 to 18 hours, and for most of their waking hours all they do is eat. Koala bears eat the leaves of eucalyptus trees. A full-grown koala can eat almost 2 to 3 pounds of leaves in a day. Despite their slow movements and sweet look, koala bears can be _ when hungry. Other than this, there are the stress caused to koalas due to human handling and the fights that start in koalas. Almost everyone finds koalas lovely in the zoo. However, as far as having koala bears as pets is concerned, there are legal issues to consider. Other than that, being able to provide for its diet and habitat is another point that needs some attention before any law legalizing their adoption as pets is passed.
Answer: Enthusiastic.
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What's the author's attitude towards people raising the koala?

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Article: Harriet Tubman was an AfricanAmerican woman who fought against slavery. She was born in 1820. She helped many people escape from slavery through the Underground Railroad. It was an organized effort to help slaves from the southern states to areas that banned slavery. Slaves could be sold freely. Families were often separated. Harriet married a free black man named John Tubman in 1844, yet she remained a slave. In 1849, the farmer who owned her died. Then she ran to the home of a white woman who had offered to help her. This woman told her how to reach another home where she could hide. Harriet Tubman went from place to place in this way. This was how the Underground Railroad operated. Finally,she went into the northern state of Pennsylvania. During the next ten years,she led an expanded Underground Railroad,and helped 300 slaves escape. Harriet Tubman found another way to fight against slavery during the Civil War. She went into the southern states to spy for the North. After the Civil War,Harriet Tubman settled in New York State. She gave speeches to raise money for better education for black Americans, worked for women's rights and sought help for older adults who had been slaves. Harriet Tubman died in 1913.By that time, she had been recognized as an American heroine .
Answer: Harriet's fight against slavery.
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What does the passage mainly tell us?