Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: When I was growing up, I was embarrassed to be seen with my father. He was badly crippled , and when we would walk together, his hand on my arm for balance, people would stare, I would be ashamed of the unwanted attention. If ever noticed or bothered, he never let on. It was difficult to walk together--and because of that, we didn't say much as we went along. But as we started out, he always said, "You set the pace. I will try to follow you." Our usual walk was to or from the subway, which was how he got to work. He went to work sick, and even in bad weather. He almost never missed a day, and would make it to the office even if others could not. It was a matter of pride for him. When snow or ice was on the ground, it was impossible for him to walk, even with help... Such times my sister or I would pull him through the streets of Brooklyn, N.Y., on a child's sleigh to the subway entrance. Once there, he would try to grasp handrail until he reached the lower steps that the warmer tunnel air kept ice free. In Manhattan the subway station was the basement of his office building, and he would not have to go outside again until we met him in Brooklyn on his way home. w.w.w.k.s.5.u.c.o.m When I think of it now, I am surprised at how much courage it must have taken for a grown man to suffer from shame and disability. And I am also surprised at how he did it--without bitterness or complaint. He never talked about himself as an object of pity, not did he show any envy of the more fortunate or able. What he looked for in others was a "good heart", and if he found one, the owner was good enough for him. Now that I am older, I believe that is a proper standard by which to judge people, even though I still don't know exactly what a "good heart" is. But I know the times I don't have one myself. He has been away for many years now, but I think of him often. I wonder if he sensed my reluctance to be seen with him during our walks. If he did, I am sorry I never told him how sorry I was, how unworthy I was, how I regretted it.... Options: A By subway. B By bus. C By wheelchair. D By bike Answer: A By subway. Question:
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The answer is:
How did the father get to work usually?

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: Many environmentalists and entrepreneurs are looking for ideas on how to "capture gold" -- that is, how to collect and convert plastic waste into new plastic or fuel. OK, describing plastic waste as potential "gold" may be overdoing it. But the campaigners say that publicizing the notion that plastic is worth something may help reduce the amount of waste that ends up in oceans and the bellies of sea creatures. To that end, they have set up a competition inviting members of the public to submit ideas online. Organizers will take the best ones to the Rio+20 Earth Summit in Rio de Janeiro next month, where they are planning a daylong side event called Plasticity focusing on issues related to plastic pollution. The plastic waste problem is gaining broader attention as environmentalists, scientists, manufacturers and the public become more aware of the sheer volume of the stuff that finds its way into the sea. More than 260 million metric tons of plastic are now produced per year, according to the trade association PlasticsEurope. The majority of that is not recycled. Most of it ends up in landfill, and a significant amount ends up as litter on land, in rivers and in the oceans. Technological advances have made clear that it is possible to reuse much of this plastic by turning it into fuel or new products. Yet the companies that have come up with such solutions have not achieved the economies of scale that would allow them to function profitably. Insufficient waste-collection and recycling systems in most countries also stand in the way of " _ " concept, said Doug Woodring, an environmental entrepreneur in Hong Kong who is among the organizer of the Plasticity forum in Rio. Rather than breast-beating, the form aims to highlight some of the technologies and ideas out there for collection and reuse. My personal favorite for now is a vacuum cleaner with plastic parts made from plastic waste. Options: A have collected enough waste to be used B have no practical solutions C haven't reached profitable scale D lack technological advances Answer: C haven't reached profitable scale Question:???
output answer: According to Doug Woodring, the companies that want to reuse plastic waste _ .

Please answer this: Write a multi-choice question for the following article, with the given choices and answer: Article: I'd always dreamed of exploring Africa, ever since I read my first Tarzan(<<>> )comic as a child. Finally, in 2004, to celebrate my 60thbirthday, I went to Tanzania to experience a safari and climb Mount Kilimanjaro, the highest mountain in Africa. Seated next to me on the flight was Tanzania's minister of water and wildlife development. We talked for thousands of miles, and he arranged me to visit a school. When I toured the school, I was shocked. The leaky roofs turned the dirt floors into mud during the rainy season, and the walls couldn't keep out the heat, cold or bugs . The school was in need of all material goods, but the kids possessed great human spirit. It broke my heart that these children had to struggle to survive, so I asked the headmaster what it would cost to feed them. As little as 20 cents per child per day, he told me. Immediately I got home, I founded Kids of Kilimanjaro. Since then we've grown to provide hot lunches for nearly 13,000 schoolchildren every day. The free lunch program has eased a major problem the youngsters face. I know a good education could really make a difference in these children's lives. My parents always stressed the importance of education. I paid my own way through college in Tokyo by teaching English to students and businesspeople. After attending university I moved to San Francisco, when I was 25 years old. In 1978 I realized my American dream when I founded my own company. My success all started with a good education. It's amazing that something as simple as a nutritious lunch can change and enrich so many lives. Giving young people a better, healthier life can inspire them to go all the way through college and lead a movement that transforms their country. Options: A He was curious about what Africa was like. B He was concerned about the Africans' miserable life. C He wanted to get an idea of the area's wildlife. D He hoped to lead a movement that would transform his country. Answer: A He was curious about what Africa was like. Question:
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Answer:
Why did the author go to Tanzania to celebrate his 60thbirthday?