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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Question: Article: As a young girl, Margaret "Mattie" Knight never played with dolls, preferring to make toys for her brothers instead. In 1849, Knight went to work in a cotton factory where she witnessed a "shuttle," a device that carries thread back and forth across a textile loom , fly off the machine when the thread broke, striking and killing a young boy about her own age. The 12-year-old Knight developed a safety mechanism that made it impossible for a shuttle to leave the loom. The design was so effective, soon virtually every new power loom carried her invention, saving countless workers from injury or death. Being so young, she didn't bother to patent the device, so she never received payment. Knight wouldn't make the same mistake later in life when she invented a machine that could produce flat-bottomed paper bags. Knight had built a small wooden model in her home, but she needed a metal version to show it could hold up to the stress of mass production. So she hired Charles Annan to make the full-sized machine for her, only to have him try to claim the patent for himself. When Knight sued , Annan's argument was that the design had to be his, because no woman could possibly understand the complex mechanics. Knight proved him wrong when she brought back her wooden prototype and explained how every part worked. She won the case in 1871, making her the second woman to hold an American patent. Over a hundred years later, her design is still used as the basis for many modern flat-bottom bag machines. But that wasn't the last the world heard of Mattie Knight. During her lifetime, she made about 90 inventions and received 26 patents, becoming one of the most productive female inventors of the 19th century.
Answer: It reduced injuries at textile plants.

Answer: What do we know about Knight's first invention?

Question: Article: Many of us dream of having thousands and thousands of dollar to spend on what we desire We can buy lottery tickets, enter contests or spend hours building a business or invest in the stock market. We are sure that when we have plenty of money, we will be happy. While having some money does have an impact on our level of happiness, having a lot of money does not. It is reported that Americans whose income goes from $20,000 a year to $50,000 a year are more likely to be happy. But beyond $50,000, happiness does not increase as salaries go up. It is because we are never satisfied. Catherine Sanderson, a psychology professor at Amherst College says, "We always think if we just had a little more money, we'd be happier. But when we get there, we are not." Daniel Gilbert, a psychology professor at Harvard notes,"The more you make, the more you want. The more you have, the less it brings you joy. We incorrectly assume we'Il get more pleasure from more, and we don't." The things money can buy don't make you happy either. A lot of research suggests that you won't find the "good life" buying expensive "toys". You finally buy that BMW you've always wanted and it soon loses its appeal. Then, instead of wondering if a new car is what really makes you happy, you decide you just need a different new car. It is an endless cycle. To really be happy, you need to understand what makes you happy in the first place. One secret of happiness is people. Surveys have found that people need people. Those who have five or more close friends are 50% more likely to describe themselves as "very happy". Good relationships have a far greater effect on happiness than larger salary. Andrew Oswald, an economist at England's University of Warwick says, "B you are looking for happiness in life, find the right husband or wife rather than trying to double your salary." So invest your time and energy in people. The reward is much bigger in terms of happiness!
Answer: Having some money brings happiness to some degree.

Answer: Which of the following statements would the author agree to?

Question: Article: Grandma celebrated her fifty-third birthday just weeks before grandpa died of cancer in 1965. Although his passing was very difficult for her, I think their shared struggle to make his life longer taught grandma that good health was not to be taken for granted, and she made up her mind to live the rest of her own life as fully and as long as she could. One day, when she announced to attend lessons at the Fred Astaire Dance Studio in Portland, Oregon, where she lived, we rolled our eyes in embarrassment and helplessly wished she would just stay home and bake cookies as normal grandmothers did. Many years filled with countless dance lessons passed before we learned to appreciate the wonder of having a dancing grandma. I suppose grandma's primary motivation for wanting to learn to dance was social. She had been a shy girl, always very tall and heavy, and had married into grandpa's quiet lifestyle before developing any elegance or confidence in her personal appearance. Dancing, on the other hand, filled her life with flash lights, wonderful parties, beautiful dresses, handsome young dance instructors, and the challenge of learning. Although the weekly dance lessons did not change her ample, two-hundred-pound figure, grandma surprised everyone with energetic performances on the dance floor, which soon gave her as much elegance and confidence as any Miss American competitor. Having taken weekly dance lessons for years, my grandma learned various dances easily and was soon participating in dancing matches all over the Northwest. When I was fourteen, grandma proudly invited me to watch her compete in one of these matches to be held in the grand ballroom of the Red Lion Inn. My attitude was still unenthusiastic at that point, but to make her happy, my mother and I attended the match. As if to prove me wrong, grandma made a wonderful showing in every event she entered. I thought she was truly the queen of the ball during the dance, and my thoughts were shared by the judges a short time later when she was awarded a gold cup for her outstanding performance.
Answer: Good health was not there for everyone.

Answer:
What did grandma learn from grandpa's death?