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: The story happened during the Second World War. An old man lived in a small town of Germany. He had three sons and they all worked in the same factory where he had worked. After the war had begun, his sons were all made to join the army one after another and they all died in the fights. The old man was very sad. He didn't have enough food and was often hungry. And nobody helped him and he didn't know how to go on living. It was a very cold winter night. The old man couldn't go to sleep. He had been hungry for two days and it was so cold in his room that ice could be seen. He had to get up and began to run in the room until he lay down on the floor. The next morning he had to beg from door to door. He had been to a lot of cities and knew a lot. Once he came to a village, but the villagers were all poor and couldn't give him anything. He was too hungry to go to another village. He thought hard and found a way. He came to a police station and called out, "Hitler is a foolish pig!" Out came an old policeman at once. He took the old man into a room, gave him some bread and a cup of tea. Then he said, "Don't say so in our village, sir!" "I'm sorry, sir," said the old man. "I don't know it's Hitler's hometown." "No, no, sir," the policeman said in a hurry. "It's pigs' hometown!"
Answer: they had to do so

A: The old man's sons joined the army because _ .
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Q: Article: The crisis at the damaged Fukushima Dai-Ichi Nuclear Power Station in northern Japan has raised worries about radiation risks. We spoke Tuesday with Jonathan Links, an expert in radiation health sciences. He is a professor at the Johns Hopkins Bloomberg School of Public Health in Maryland. Professor Links says workers within the nuclear plant are the only people at risk of extremely high doses of radiation. JONATHAN LINKS: "Of course, we don't know what doses they've received, but the only persons at risk of acute radiation effects are the workers." For other people, he says, there may be a long-term worry. People can get cancer from low doses of ionizing radiation, the kind released in a nuclear accident. Professor Links says scientists can use computers to quickly model where radioactive material has blown and settled. Then they measure how large an area is contaminated. He says if the situation is serious enough, officials could take steps like telling people not to eat locally grown food or drink the water. JONATHAN LINKS: "But that would only be the case if there was a significant release and, because of wind direction, the radioactive material was blown over the area, and then settled out of the air into and onto water, plants, fruits and vegetables." The reactors at Fukushima are on the Pacific coast. But Professor Links says people should not worry about any radioactive material leaking into the ocean. JONATHAN LINKS: "Even in a worst-case scenario accident, the sea provides a very high degree of _ . So the concentration of radioactivity in the seawater would still be quite low." Japan is the only country to have had atomic bombs dropped on it. That memory from World War Two would create a stronger "psychological sensitivity" to radiation exposure, Professors Links says. Next month is the twenty-fifth anniversary of the explosion and fire that destroyed a reactor at Chernobyl in Ukraine. The nineteen eighty-six event was the world's worst accident in the nuclear power industry. A new United Nations report says more than six thousand cases of thyroid cancer have been found. These are in people who were children in affected areas of Belarus, Russia and Ukraine. The report says that by two thousand five the cancers had resulted in fifteen deaths. The cancers were largely caused by drinking contaminated milk. The milk came from cows that ate grass where radioactive material had fallen. To get the latest updates, go to www.unsv.com. Contributing: James Brooke
Answer: Worries and influences caused by the nuclear crisis .

A: The passage mainly tells us _ .
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Q: Article: While Errenzhuan has gained in popularity over the past few years, not least as a result of comedians such as Xiao Shenyang, so has the Western equivalent of the ancient art form - stand-up comedy. Stand-up comedy differs from Errenzhuan. It normally features a single person on stage, as opposed to a duet. Although music is sometimes included, other features such as dance are a lot rarer. Instead, stand-up comedy is usually just one person, a microphone and the audience. Whether the comedian _ or has people in fits of laughter is all down to his or her skill. I never used to like the idea of stand-up comedy. It seemed too forced for me. "I'll laugh when I feel like it," I thought. I don't want to have someone stand in front of me, pressuring me to chuckle. Stand-ups also have a reputation for picking on their audience. If you sit close to the front of the stage, you'd better be careful. One cough or wrong move, and the comedian will pounce. Before long, you are the focus of all the jokes. But a couple of years ago, I went to see a comedian who changed my opinion - British stand-up Stewart Lee. He is not hugely famous, but instead of jokes, he told very funny, often long stories about his life. His delivery was dry, and he had a very quick wit. I soon began to appreciate just how hard it is to make people laugh on demand. The great thing about stand-ups is that you hardly ever see two that are the same. There are so many different approaches, and people from all sorts of backgrounds can make people laugh in different ways. For example, one of the most popular stand-up comedians in the world is Chris Rock. Rock is African-American, and uses his race, and the problems he faces because of it, as material for his routines. He turns a topic that is normally serious into something funny. "A black C student can't be a manager at Burger King, meanwhile a white C student just happens to be the President of the United States," he once joked about racism in the United States during George Bush's presidency. That is the beauty of stand-up comedy. Just about anything can be turned into a joke.
Answer: ancient comedies in the world

A:
The passage is mainly about _ .
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