In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

[Q]: Article: Overlooking the swollen banks of the Missouri River at Omaha's riverfront landing, one scientist has an important explanation for the past three months of flooding .While many consider the flood to be man-made, a result of water released by the US. Army Corps of Engineers upriver, his theory aims to look deeper into the root of the problem. "The Missouri River is flooding," said Dr. James Hansen, Director of NASA's Goddard Institute for Space Studies, during a visit to Omaha on Tuesday."We've had floods that usually only happen once in every hundred years a couple of times on the Missouri River recently. That's one of the expected consequences of the increasing level of atmospheric carbon dioxide." Hansen, who is considered to be one of the world's leading experts on global warming , said the Missouri River is an example of how global warming is affecting the earth ."Unless you do statistics ,and you see that the frequency of these events is changing , it's not so easy to see that changes are occurring , because the climate system has large inertia ,"he said . Hansen explained, "The ocean is four kilometers deep, and the ice sheets are two or three kilometers thick , so they don't respond immediately as we begin to change the atmospheric composition .We've only experienced about half of the warming that will be caused by the gases already in the atmosphere .The full effect is going to be felt by our children and grandchildren .And if we continue to increase the amount of CO2, the effect will be even larger." Hansen drew a comparison, "If we spend more money than what we're taking in , we're leaving a debt for our children and grandchildren to deal with ."According to Hansen, the responsibility lies in effective policy making to fight against global warming .That includes a gradual reduction in carbon emissions .Hansen suggests that a rising price be placed on carbon emissions, which should be collected from the fossil fuel companies at the first sale . Without effective measures taken by the government, Hansen said the public could expect more of the recent extreme weather patterns,, including more severe droughts and floods in the decades ahead .
Answer: the army releasing water upriver
[A]: Many people think the reason for the flooding of the Missouri River is _ .

[Q]: Article: British writer John Bunyan was born at Elstow, Bedfordshire, England, in November, 1628. His father was a maker and mender of pots and kettles, and the son followed the same trade. Though he is usually called a tinker, Bunyan had a settled home and place of business. He had little schooling, and he describes his early surroundings as poor and mean. He became much interested in religions, but it was only after a tremendous spiritual conflict, lasting three or four years, that he found peace. His struggles are related with extraordinary vividness and intensity in his "Grace Abounding to the Chief of Sinners." His writing began with a controversy against the Quakers , and shows from the first the command of a homely but vigorous style. Like most working men at the time, Bunyan had a deep hatred for the corrupted, hypocritical rich who accumulated their wealth "by hook and by crook." As a stout Puritan , he had made a conscientious study of the Bible and firmly believed in salvation through spiritual struggle. Bunyan's style was modeled after that of the English Bible. With his concrete and living language and carefully observed and vividly presented details, he made it possible for the reader of the least education to share the pleasure of reading his novel and to relive the experience of his characters. Bunyan's works include Grace Abounding to the Chief of Sinners (1666), The Life and Death of Mr. Badman (1680), The Holy War (1682) and The Pilgrim's Progress (1684). The Pilgrim's Progress is the most successful religious allegory in the English language. Its purpose is to urge people to observe Christian doctrines and seek salvation through constant struggle with their own weaknesses and all kinds of social evils. It is not only about something spiritual but also bears much relevance to the time. Its predominant metaphor -- life as a journey -- is simple and familiar. The objects that Christian meets are homely and commonplace, and the scenes presented are typical English ones, but throughout the allegory a spiritual significance is added to the commonplace details. Here the strange is combined with the familiar and the trivial joined to the divine, and, a rich imagination and a natural talent for storytelling also contribute to the success of the work which is at once entertaining and morally instructive. "The Vanity Fair," is an excerpt from The Pilgrim's Progress. The story starts with a dream in which the author sees Christian the Pilgrim, with a heavy burden on his back, reading the Bible. When he learns from the book that the city in which he and his family live shall be burnt down in a fire, Christian tries to convince his family and his neighbors of the oncoming disaster and asks them to go with him in search of salvation, but most of them simply ignore him. So he starts off with a friend, Pliable. Pliable turns back after they stumble into a pit, the Slough of Despond. Christian struggles on by himself. Then he is misled by Mr. Wordly Wiseman and is brought back onto the right road by Mr. Evangelist. There he joins Faithful, a neighbor who has set out later but has made better progress. The two go on together through many adventures, including the great struggle with Apollyon, who claims them to be his subjects and refuse to accept their allegiance to God. After many other adventures they come to the Vanity Fair where both are arrested as alien agitators. They are tried and Faithful is condemned to death. Christian, however manages to escape and goes on his way, assisted by a new friend, Hopeful. Tired of the hard journey, they are tempted to take pleasant path and are then captured by Giant Despair. Finally they get away and reach the Celestial City, where they enjoy eternal life in the fellowship of the blessed.
Answer: Bunyan studied the Bible to save the human souls
[A]: According to the passage, Bunyan hated the rich people mainly because _ .

[Q]: Article: A couple of years ago on a hot summer day in south Florida, a little boy decided to go for a swim in the old swimming hole behind his house. In a hurry to dive into the cool water, he ran out of the back door, leaving behind shoes, socks, and shirt as he went. He flew into the water, not realizing that as he swam toward the middle of the lake, an alligator was swimming toward the shoe. His mother in the house was looking out of the window and saw the two as they got closer and closer together. In great fear, she ran toward the water, shouting to her son as loudly as she could. Hearing her voice, the little boy became worried and made a return to swim to his mother. It was too late. Just as he reached her, the alligator reached him. From the bank. the mother caught her little boy by the arms just as the alligator _ his legs. That began a tug-of-war between the two. The alligator was much stronger than the mother, but the mother was much too determined to let go. A farmer happened to drive by, heard her screams, raced from his truck, took aim and shot the alligator. After weeks and weeks in hospital, the little boy survived. His legs were extremely scarred by the attack of the animal and on his arms were deep scratches where his mother's fingernails dug into his flesh in her effort to hang on to the son she loved. The newspaper reporter, who interviewed the boy after the injury, asked if he would show him his scars. The boy lifted his pants legs. And then, with obvious pride, he said to the reporter. "But look at my arms. I have great scars on my arms, too. I have them because my mom wouldn't let go.
Answer: an alligator
[A]:
The boy's legs were scarred by _ .