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.

Example Input: 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
Example Output: According to the passage, Bunyan hated the rich people mainly because _ .

Example Input: Article: He wanted to go to college, and the only thing that might have stopped him was his disability. But this year, Zhang Yan and other physically disabled kids can realize their dream just like any other students. As registration for this year's college entrance examinations draws near, the government has loosened its requirements on physical examinations for new college students. A new rule was jointly decided in March by the Ministry of Education, the Ministry of Health and the China Disabled Persons' Federation. It clearly states that no student should be rejected simply because they have a physical disability. Schools may still advise disabled students on the choice of their major if it is likely to affect their future chances of employment. However,the final decision will be up to the student., "Now I can just go ahead and do my best in the exams. I don't have to worry that my healthier classmates will have the upper hand because of my disability," said Zhang happily. The 18-year-old boy will graduate this year from a Chengdu high school inprefix = st1 /SichuanProvince. He lost an eye during an accident as a child. Zhang's mother calledPekingUniversityto ask if her son's eye problem would make it difficult for him to accepted by the university's Bio-chemistry Department. She was happy to find out that their choice of students would be based "fairly" on exam results. "The university official said my son would be judged at the same level as other students ," said Zhang's mother.
Answer: does a very good job in his studies.
Example Output: From the report we can infer that Zhang Yan probably _ .

Example Input: Article: Picture the scene: the battery on your mobile phone has run out. You can't make any calls for help and no one can contact you. You are all alone - well, not quite. Just reach into your pocket and take out a piece of sugar.Put it into the battery, wait a minute, and you're back on the phone. Thanks to a couple of American scientists, this situation could become real.Swadesh Chaudhuri and Derek Lovely have invented the "bacteria battery" - powered by bacteria that eats sugar and turns it into electricity. "This is a special organism," Lovely said."You ean harvest enough electricity to power a cell phone battery for about four days from a spoonful of sugar." In the past, bacteria batteries have been expensive and not long-lasting. But this battery uses more efficient bacteria that can turn 80 percent of sugar into electrical energy. This is 30 percent more than similar batteries can manage. The bacteria battery could become as small as a household battery. It's also cheap and stable, as sugar can be taken from waste and crops. But the sugar to electricity process is slow: it could take weeks for the bacteria to digest a cup of sugar.And it produces "greenhouse" gases which pollute the environment. The scientists understand there is a lot more work to be done. "It is still young," said Lovely."Where we are now is where solar power was 20 0r 30 years ago." But he believes the battery could be used in scientific equipment at the bottom of the ocean.Other ideas include using sugar in the blood to run medical devices in the human body, and taking sugar from animal waste to provide energy to power homes in rural areas.
Answer: a scientific invention of a new kind of bacteria battery
Example Output:
This passage is mainly about _ .