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.

Q: Article: One summer my friend and I decided to go to Italy for a holiday and we decided to travel there without going through a travel agency. You know, you would be submerged in crowds of tourists and lose lots of opportunities to get familiar with the country more closely. We started to think over our trip and managed to come up with a free tour of Italy. The trip was not very long but it was still very impressive. We look forward to going there again! Of course, we spent lots of time arranging the trip, but it was well worth it! Of course I was afraid that something would go wrong and I was especially anxious about my visa, but everything went quite smoothly in the end. ks5u The most difficult part was getting a visa without an invitation. In the Italian consulate , one must hand in some official paper proving that one has a hotel booked for oneself in order to get the visa. Then we had to solve the ticket problem. Airlines often sell cheap tickets and we bought ours far in advance. The next step was to book a hotel. We finally booked a hotel about thirty km away from the heart of Rome and it was the perfect choice for our trip. Every day we took a train that carried us to the heart of Rome. Our big house, which was surrounded by the forest, was a rare girl for the fresh air and silence, beautiful views, hospitable hosts, comfortable living conditions delighted us to no end. Besides this, we were very lucky that our mistress was Russian. She gave us a lot of advice that was of great use. She told us what transport to choose and where the best places to go. Don't be afraid to arrange your trip by yourself. It's not difficult! The only thing I'll say right now is that we really enjoyed traveling by ourselves. We walked with a map and a guide-book to wherever we wanted and we even met some of our fellow countrymen on the way just two or three times. So, if you're also planning a "single" trip, don't forget to take a Russian-Italian phrasebook as people in Italy prefer to speak in their native tongue.
Answer: He had a great time there.

A: Why does the author want to go to Italy again?
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Q: Article: The Ice Hotel Are you going into skiing? Is winter your favorite time of year? If you like snow and ice, maybe you should stay at Ice Hotel in Quebec, Canada. But, you can only check in at this hotel during the winter. Why ? Because this hotel is built every December. It has 32 rooms and 80 people can stay there each night. The hotel even has a movie theatre, art gallery, and church. Of course, all of these parts of the hotel are made of ice. In fact, all the furniture, art, lights, and even plates and drinking glasses are made out of ice. Because this hotel is so unusual, it is becoming very popular. People from all over the world come to the Ice Hotel to look at the fantastic ice art, drink and eat from designed ice dishes and experience the unique atmosphere . Some couples have even got married in the hotel's ice church. But all these guests keep their winter coats on! Because of all the ice, the temperature inside the hotel is always between - 2oC and - 5oC. Surprisingly, sleeping is not a problem in the freezing cold hotel rooms. Every guest gets a special cold-weather sleeping bag and some fur blankets. These keep the room cozy and warm until morning.
Answer: What makes the Ice Hotel special

A: What is the main idea of this reading?
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Q: Article: Machu Picchu is considered to be a truly extraordinary archaeological discovery and is one of South America's largest tourist sites. As many as one thousand visitors visit the ancient Incan ruins daily. What draws vacationers and adventurers to this remote location high in the Andes Mountains of Peru ? A large part of the attraction is the mysteries that surround Machu Picchu. For example, Machu Picchu is considered "the lost city" of the Incas because it was never found by Spanish invaders and was known to only a few local peasants for almost four hundred years. The "city in the clouds", Machu Picchu's lasting beauty comes from the careful blending of its striking architecture with its mountaintop environment. Its greatest skill shows are in the stone structures, which equals that of the ancient Egyptians. The stone blocks were so appropriately cut that they fit together without the need for mud. The largest stones at Machu Picchu weigh as much as fifteen tons! It has been difficult to explain how the huge blocks were transported. The buildings, including many that have survived lots of earthquakes, contain stones which _ so perfectly that a knife cannot be forced between them. When compared to other ancient civilizations, it is difficult to understand how Machu Picchu could have been missed by the Spanish and lost from history for four hundred years. For many of the mysteries of Machu Picchu being unsolved, it is clear why Machu Picchu remains "the most famous ruins in all of South America".
Answer: Machu Picchu is the largest stone city of the world.

A:
Which of the followings is NOT a mystery of Machu Picchu?
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