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: 14 days from just PS2,090 pp Fully inclusive from the UK Price covers, international airfares, departure taxes, fuel charge, local transportation all meals, entrance fees, guides, daily tours and visas for UK citizens. * Days 1-3: UK-Shanghai Fly to the great city of shanghai and in the evening _ traditional shanghai food. Visit the beautiful Yu Garden, Old Town. Shanghai Museum, cross the Grest Nanpu Bridge and tour the Pudong area. Also explore Xintiandi with its 1920's style Shikomen buildings and end your stay in Shanghai with an amazing Huangpu River evening tour. * Days 4-7: Shanghai-Yangtze River Tour Fly to Yichang and change(approx: one hour)to board your Yangtze River ship for the next four nights. Enjoy a tour of the three Gorges Dam before sailing on the grand Yangtze River, passing through the impressive Three Gorges. We take a side trip to the Lesser Three Gorges or travel up the Shennong Stream in a peapod boat and enjoy various shore trips along the way. * Day 8: Chongqing--Chengdu Get off in Chongqing and drive to Chengdu for an overnight stay. * Day 9-10: Chengdu-Xi'an Visit the famous Panda Reserve to see the lovely animals. We then fly to the historic city of Xi'an for two nights, stay and enjoy traditional Shuijiao. Next day, explore one of the most important discoveries of the 20th century--the Terracotta Warriors ,followed by the ancient City Wall and a performance of Tang Dynasty dancing. * Day11-13: Xi'an-Beijing Visit little wild Goose Pagoda and see the ancient objects at the well-known Shanxi Provincial Museum before walking through the lively Muslim Quarter to see the Great Mosque. Later fly to Beijing for three nights' stay and try Peking Duck. During our stay in Beijing, we stroll through Tian'anmen Square to the Forbidden city, the largest and best preserved collection of ancient buildings in China, and visit the summer palace. Next day we take a walk on the Great wall, tour the unique Temple of Heaven and enjoy an attractive Chinese Acrobatic Show. * Day 14: Beijing-UK Fly back to the UK, arriving home later the same day filled with happy memories.
Answer: the Terracotta Warriors and the Great Mosque
Example Output: The first and last scenic spots he visited in Xi'an are _ .

Example Input: Article: A green house is a building made of glass which is used for keeping warm when the outside temperature is low. In a similar way there are several gases in the atmosphere (mixture of gases that surround the earth) which trap the heat produced by the sun and prevent it from escaping. These gases are known as "greenhouse gases". And the way in which they trap heat in the atmosphere is called the "greenhouse effect". This is not simply air pollution. Most of the main greenhouse gases exist naturally in small amounts in our atmosphere, and without them the earth would be 30 degrees colder and human life would not exist. In other words, the greenhouse effect is a natural course which is to some degree helpful to us. The problem is that in the last century and a half, we have been putting too many of these gases into the earth's atmosphere by burning large quantities of coal and oil and by cutting down forest. The rapid increase in greenhouse gases is making the world warmer. The world's temperature has already gone up by half a degree this century, and the sea level has risen by 10 centimetres. If the amount of carbon dioxide in the atmosphere doubles, there will probably be a rise in the earth's temperature of between I and 4degC;. This may seem a small increase, but it would be enough to cause major changes in geography and agriculture. Large areas of the world would be flooded, and some areas would become dry and unable to produce crops. It is important, too, to consider that there may be a delay of about 30 years in the greenhouse effect. This means that we are probably experiencing only now the effect of the gases put into the atmosphere before the 1960s. Since then, our use of these gases has greatly increased.
Answer: a natural course that is to a certain degree useful to us
Example Output: According to the passage, we can know "greenhouse effect" means _ .

Example Input: Article: For years, children in the industrial areas of Europe and America seldom left their smoky cities to see the beauties of the countryside. This was not because the woods and fields were always far away, but because they were too far from the city to permit people to make a day trip between morning and nightfall. In 1907, a young German schoolmaster had an idea which changed this state of affairs. He decided to turn his little schoolhouse into a dormitory for the summer holidays. Anyone who brought his sleeping bag and cooking equipment along could stay there for a very small quantity of money. The idea was a success. A few years later, the schoolhouse was much too small to hold the many young people who wanted to stay there. As a result, a dormitory was set up in an old castle nearby. This was the first Youth Hostel. Today, young students and workers of every country can meet in the hostels and get to know each other. When young people arrive at a hostel, they have only to show their card of membership in a hostel organization in their own country. This card will permit them to use the facilities of hotels all over the world for a very low price. Often, at the evening meal, a group of boys and girls from various parts of the country or the world will happen to meet at the same hostel. They may put their food together and prepare a dinner with many kinds of dishes. Sometimes a program will be organized after the meal, with dances, songs, or short talks followed by a question period. One can learn a lot of things about other places, just by meeting people who come from those places. For this reason, a few weeks spent "hosteling" can be just as useful a part of one's education as classes in school.
Answer: Asia
Example Output:
The first youth hostel was opened in _ .