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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: Mr Smith was the manager of a hotel in Springfield. One weekend all of the hotels in the city were full because there was a large meeting. Late in the evening three men came into the hotel and asked for rooms. Mr Smith explained that because of the meeting, there were no rooms ready for use. The men were very unhappy because they had no place to stay in. Mr Smith wanted to help them. He remembered that Room 414, a very small room, was empty. He asked them if they would share a room. The three men agreed. Mr Smith told them that the room would cost $30: $10 for each. Each of them gave Mr Smith $10, and they went up to the room. Mr Smith soon began to feel sorry. "Thirty dollars is too much for that small room," he thought. He called one of his men over and said, "Here is $ 5. Bring it to the man in Room 414. I've asked too much money for their room." The worker took the money from his manager. While he was on his way to Room 414, he started to think, "How can I divide $5? Well, I'll give each of them only $1 and I keep $2. The men will be happy to get anything back. I'll make a little money and Mr Smith will never know." So he returned $1 to each man. You see, there come a problem, each man had at first paid $10. After the worker returned them $1 each, each man had paid 9. There were three men, $9 x 3 =" $27." The worker kept $2 --$27+$2="29." Where is the missing dollar?
Answer: The three men stayed together in one room.
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Which of the following is True?

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Article: Imagine life without the Internet -- not being able to chat with your friends or look up information for your homework or research project. That is the reality for nearly two-thirds of our world's population, either because they cannot afford WiFi access or are located in remote, inaccessible areas. Now Google has decided to do something about that. Google's Project Loon will attempt to send balloons high up into our earth's atmosphere in 2015. Each balloon will be equipped with a mini computer and a WiFi radio that will send Internet signals over the places it is floating over. The network equipment on Google balloons will communicate with a special antenna attached to each user's home. These antennae are in turn connected to a local Internet Service Provider. Each balloon will also communicate with each other to hand over signals as one floats out of an area, and another floats in. The balloons are 15 meters wide and made of a material that is three times thicker than the plastic bag at the supermarket. This helps them defend themselves against cold temperatures and changing air pressure. Google balloons will circle the earth at a height of 20 kilometers-- in a layer of our atmosphere known as the stratosphere . This is higher than the altitude at which planes fly. Once the balloons reach the desired altitude after being released from the earth, they will ride on air currents. What keeps these balloons from flying away? They will be controlled by people at the Project Loon command center. A pump operating on solar power will fill the balloon with gas to raise it or let gas out to lower it, based on instructions. This allows the balloon to float on different air currents which are moving either clockwise or anti-clockwise. There is no doubt that this technology can bring education to many children, weather information to farmers, and communication to natural disaster areas. However, one big question remains -- will some countries be comfortable with balloons above their heads? There could be concerns about spying and other problems.
Answer: Helping us learn more about the earth's atmosphere.
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What's the purpose of Google's Project Loon?

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Article: If you had a strange sound in your ear, what would you do? One man in Wales who thought he had a fly in his ear called 999, the emergency services number in Britain. And so did a woman who was worried about her green potatoes. Could she make chips with them? Were they poisonous? She didn't hesitate about calling the local ambulance service to ask. According to a recent report, more than 31,000 non-urgent calls were made to the Welsh Ambulance Service in the last year. Inappropriate calls are a headache for health professionals everywhere. In the US, prank calls to 911 happen on a daily basis. Many callers use apps which hide their identity. But those who try to be funny shouldn't be surprised if the police _ . One man from Colorado was arrested for making more than 1,200 prank calls, according to a report on the US television station KOAA--TV. People who take these calls are trained to stay calm and keep a straight face, no matter how strange the call sounds. "There's no way for us to know whether the call is real, accidental or a prank call," said a public safety worker interviewed by the American TV channel. The Head of Clinical Services at the Welsh Ambulance Service, Richard Lee, has a warning for prank callers. He says:" When people misuse the service it means our precious time is being taken away from someone who really does need our help." Indeed, these hotlines are supposed to help the seriously ill or those with a life-threatening injury. You never know, one day, the person who needs assistance could be you or someone in your family.
Answer: By giving examples.
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How does the author introduce the topic of the text?