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: Pottery is the name given to all kinds of useful or artistic objects made from clay. Pottery can be plates or water pots or baskets. Pottery can be large or small, fancy or plain. Pottery is part of the large family of ceramics .Ceramics are synthetic materials. For example, bricks and tiles are both ceramics. How is pottery made? First, a potter takes some clay. Clay is a soft, red material from the earth. It looks a little like red dirt, but it's very different. Clay is thick and rich. Wet clay can be worked into any shape. When the clay dries, it will keep that shape. The potters takes some clay and pushes and squeezes it until it is soft and smooth. After that, the clay can be shaped into anything. There are several ways to shape clay. Sometimes potters use their hands. Sometimes they use a special wheel. They place the clay in the center of a round, flat wheel. The wheel moves very fast, and the potter shapes the clay. After the potter has shaped the clay, it can be decorated . Potters use glaze, which is a kind of paint, to decorate their work. Some glazes are very simple. Other glazes have beautiful colors and designs. The glaze is not just beautiful. It is also useful. The glaze makes the pottery smooth and waterproof. Potters also make some decorative lines and designs on the surface. After it is decorated, the clay must be baked, or fired, in a special oven. Baking the clay at very high temperature makes it hard and strong. Firing also makes the glaze stick to the pottery. When the firing is over, the potter carefully removes the pottery from the oven and lets it cool slowly. If it cools too quickly, it could crack and break. Since pottery is waterproof, it is very popular for dishes. You can find examples of pottery in almost any home. But pottery can also be found in museums. Some pieces of pottery are valuable and beautiful pieces of art.
Answer: earth
Example Output: It is possible that ceramics are materials of _ .

Example Input: Article: SeaWorld San Diego is one of the world's famous marine adventure parks with 200 acres of world-class shows, thrilling rides and unforgettable animal encounters. More than 80 million visitors have explored the mysteries of the sea here.and spent the day checking out all eleven shows including the performance of Shamu the killer whale. In between shows you can enjoy yourself on Shipwreck Rapids. When you find that the excitement has drained your energy you can take a break to watch Shamu close! Summer special SeaWorld San Diego 7-days pass Adults at Kid's Price! Unlimited admission to SeaWorld San Diego for up to 7 consecutive days from date of first use.(available through September 30, 2010) Adult (ages 13+) Gate Price $69.00 Your Price$56.50 Child (ages 3-12) Gate Price $59.00 Your Price $56.50 7-Day Pass FREE BONUS: SeaWorld San Diego The Go San Diego Card is your ticket to the best San Diego has to offer. For one price you can enter over 55 attractions - including the San Diego Zoo, The U.S.S. Midway, Legoland, Whale Watching Excursions, and much more. The Go Card is the only ticket you need, saving you up to 55% compared to buying individual admissions. Plus, enjoy VIP access to some of San Diego's top attractions.(available April 1, 2010 - March 31, 2011) Adult (ages 13+) Gate Price $284.00 Child (ages 3-12) Gate Price $210.00 Child's Ticket for Only $5.00 For nearly 50 years, SeaWorld Parks & Entertainment has been rescuing and rehabilitating animals in need. We also work to support conservation efforts around the world. It's our passion and our duty. We would like to invite you to be a part of it. Now through December 31, 2010, when U.S. residents purchase a full-price adult admission, children ages 3-12 receive a ticket to SeaWorld for only $5.00. (Limit of one $5.00 SeaWorld Cares child ticket with each adult ticket purchased - up to a maximum of 6 child tickets). If you require more child tickets, you'll need to purchase these from the 7-day child ticket listed above. 100% of the proceeds will be donated by SeaWorld to the SeaWorld/Busch Gardens Conservation Fund. Adult (ages 13+) Gate Price $69.00 Your Price$69. Child (ages 3-12) Gate Price $59.00 Your Price $5
Answer: to draw more visitors in the summer of 2010
Example Output: The purpose of the passage is _ .

Example Input: Article: Greenspace facilities are contributing to an important degree to the quality of the city environment. Fortunately it is no longer necessary that every lecture or every book about this subject has to start with the proof of this idea. At present it is generally accepted, although more as a self-proved statement than on the base of a closely reasoned scientific proof. Recognizing the importance of greenspaces in the city environment is a first step on the right way, this does not mean, however, that enough details are known about the functions of greenspace in towns and about the way in which people are using these spaces. As to this subject I shall within the scope of this lecture, enter into one aspect only, namely the recreative function of greenspace facilities. The theoretical separation of living, working, traffic and recreation which for many years has been used in town and country planning, has in my opinion resulted in more attention for forms of recreation far from home, while there was relatively little attention for improvement of recreative possibilities in the direct neighborhood of the home. We have come to the conclusion that this is not right, because an important part of the time which we do not pass in sleeping or working, is used for activities at and around home. So it is obvious that recreation in the open air has to begin at the street door of the house. The city environment has to offer as many recreation activities as possible, and the design of these has to be such that more required activities can also have recreative aspect. The very best standard of living is nothing if it is not possible to take a pleasant walk in the district, if the children cannot be allowed to play in the streets because the risks of traffic are too great, if during shopping you can nowhere find a spot for enjoying for a moment the nice weather, in short, if you only feel yourself at home after the street door of your house is closed after you.
Answer: has been recognized
Example Output:
The importance of greenspaces in the city environment _ .