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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: Wood Buffalo National Park Wood Buffalo National Park is Canada's largest national park and one of the largest in the world. Established in 1922 to protect the last remaining herds of bison in northern Canada, it now protects an outstanding example of Canada's Northern Boreal Plains. The park was designated a World Heritage Site in 1983. Phone: (780) 697-3662 E-mail: wbnp.info@pc.gc.ca Banff National Park of Canada Banff's rich history dates back to 1885, when three railway workers stumbled upon hot mineral springs surfacing from deep within the mountains. This discovery led to the establishment of Banff National Park, and marked the beginning of Canada's national park system. Spanning 6,641 meadows and rivers, Banff National Park is one of the world's premier destination spots. Phone: (403)762-1550 E-mail: banff.vrc@pc.gc.ca St. Lawrence Islands National Park of Canada Conceived in the 1870s, St. Lawrence Islands is one of Canada's oldest national parks. Located in the scenic 1,000 Islands tourist area, this tiny jewel has a rich and complex natural human history. Centuries ago, aboriginal peoples referred to it as the "Garden of the Great Spirit". Today, 24 scenic islands, along with a mainland area at Mallory town Landing, are included in the park. Phone: (613) 923-5261 E-mail: ont. sli@pc.gc.ca Grasslands National Park of Canada It was here Sitting Bull took refuge after the Battle of Little Big Horn in 1876. Grasslands National Park is the first national park of Canada to preserve a portion of the mixed prairie grasslands. This magical land of diversity, beauty and history is divided into two blocks. The East Block contains the Killdeer Badlands and the Wood Mountain Uplands, and the West Block preserves the Frenchman River Valley and the dissected plateaus, coulees and famous 70 Mile Butte. Phone: (306) 298-2257 E-mail: grasslands. info@pc.gc.ca
Answer: Because hot mineral springs were found in Banff.
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Why was Banff National Park built?

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Article: The United States is already one year into a depression That was the news this week from the Na-tional Bureau of Economic Research. The downturn is the longest since a depression that began in 1981and lasted sixteen months. Economists generally wait for production to shrink for six months in a row before they declare a re-cession. But the bureau, a private group, uses a wider set of information to measure the economy. Thenews only confirmed what many people already knew: that the world's largest economy is weak and maynot recover soon. Worsening conclitions have led to a big drop in spending, especially on costly products like new cars. Even Japanese automaker Toyota saw its sales fall thirty - four percent in the United States in November from a year ago. The heads of Chrysler, Ford and General Motors retumed to Congress this week to again ask for federal aid. Congressional leaders denounced them two weeks ago after they came in private jets with no clear plans for saving their industry. This time, the chiefs drove to Washington in fuel- saving hybrid vehicles. And their companies presented detailed restructuring plans. The reguest for aid has risen from twenty-five billion dollars two weeks ago to thirty-four billion in loans and credit lines. G.M. wants almost half of that, and says it needs four billion dollars this month. It warned that without support it cannot continue to operate. Ford is in a better position, But the sharing of suppliers means it could be affected if G.M. or Chrysler fails. Ford is asking for a nine billion dollar credit line in case it needs it. Chrysler is the smallest and most trouble of America's Big Three. It says it needs a seven billion dollar loan by the end of the month. Two days of congressional hearings began Thursday in the Senate Banking Committee. The chairman, Democrat Chris Dodd, said he would support helping the automakers for the good of the economy. But the committee's top Republican, Richard Shelby, continued to express opposition to a bailout . A main root of the world financial crisis is the weak housing market in the United States. The Trea-sury Department has been under pressure to help troubled homeowners. Now comes news that the depart-ment is developing a plan aimed at reducing interest rates on mortgage loans for some buyers of homes. That could be good for homeowners trying to sell.
Answer: Because they didn't have a ciear plan to save their industry.
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Why were the automakers refused for federal aid two weeks ago?

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Article: When many of us take a vacation, more than anything, we seek to relax. We spend long, lazy days on a beach chair or in a hammock . But too often, we return home, very very tired. It doesn't have to be this way. Come home _ after an active trip! And you won't be too tired! Active vacations are often the most relaxing ones of all. We don't expect you to take up jogging or backpacking. Rather, we ask the sedentary vacationers to spend two to four hours a day doing things, such as walking in city streets, going to a zoo or biking beside the ocean. These kinds of activities aren't just good for your physical health. They improve your mental health and even your spiritual health. And they make vacations memorable and worthwhile. Here are some fresh ideas to make your vacations as pleasurable as they are active and healthy. *A walk at dawn or dusk can make you feel or look young again. Try to make this a daily thing that is done regularly. *Don't allow yourself to spend all your time sitting in front of the water. *Many of us spend a large part of our vacations on the road, either getting to and from our destinations, or using the car for sightseeing. But no matter how beautiful the scenery is, great memorable vacations don't happen in a car seat.
Answer: To show us how to make our vacations relaxing.
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What is the purpose of the passage?