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.

Ex Input:
Article: Mattel Inc.is recalling 4.4 million Polly Pocket toys with magnets after some of them caused serious injuries to children who swallowed magnets that fell off.Tiny magnets inside the toys may fall off without being noticed by parents and babysitters.The magnets can be swallowed or placed in children' s noses or ears.When more than one magnet is swallowed, the magnets can attract each other and cause intestine perforations which can be deadly. The Consumer Product Safety Commission received 170 reports of the magnets coming out of these recalled toys.There were three reports of serious injuries to children who swallowed more than one magnet.All three suffered intestine perforations that required operations.A 2-year-old child stayed in hospital for 7 days and a 7-year-old child was hospitalized for 12 days. The recalled Polly Pocket toys contain plastic dolls and accessories that have small magnets.The magnets measure one-eighth inch in diameter and are fixed in the hands and feet of the dolls, and even in the plastic clothing, hairpieces and other accessories to help the pieces stay on the dolls or the dolls' houses. The model number is printed on the bottom of the largest pieces on the toys.Contact Mattel if you cannot find a model number on your product to determine if it is part of the recall.Polly Pocket magnetic toys currently sold in stores are not included in this recall.The model numbers included in the recall are: B2632, B3158, B7118, G8605, H1537 and H3211.The toys were on sales in department stores and toy stores from May 2006 through September 2009. Consumers should immediately take these recalled toys away from children and contact Mattel for the return of the toys.For more information contact Mattel at 888 597-6597 anytime or visit the company' s website.
Answer: inform readers of Polly Pocket toys' recall

Ex Output:
The main purpose of the passage is to _ .

Ex Input:
Article: I have been teaching animal behavior at the Boulder County Prison in Colorado for 10 years. The course is one of the most popular in the prison. Prisoners have to earn the right to attend the course and they work hard to get in. One reason why the course is so popular is that many prisoners find it easier to connect with animals than with people, because animals don't judge them. They trust animals in ways they don't with humans. Yet, they hold a misunderstanding of how animals treat one another. Many admit that their own "animal behavior" is what got them into trouble in the first place. I teach that though there is competition and aggression in the animal kingdom, there is also a lot of cooperation and sympathy. Many of the students want to build healthy relationships, and they find that the class helps them. I use examples of the social behavior of group-living animals such as wolves as a model for developing and maintaining friendships among people who must work together for their own good and also for the good of the group. It's clear that science inspires the students here and it also gives them hope. I know some students have gone back into education after their being set free while others have gone to work for humane societies or contributed time and money to conservation organizations. One went on to receive a master's degree in nature writing. Science and humane education help the prisoners connect with values that they otherwise would not have done. It opens the door to understanding, trust, cooperation and hope. There's a large population of people to whom science could mean a lot, if only they could have access to it. The class helps me, too. I get as much out of it as the students and it has made me a better teacher.
Answer: they are more familiar with animal behavior

Ex Output:
The author's course is welcomed by the prisoners because _ .

Ex Input:
Article: Modeled after US hot website.com, group buying websites are now popular in China. These websites use the power of group buying to get competitive discounts for a daily deal on some best stuff to do, see, eat and buy in the cities across China. Discounts are available within just one click. Zhao lei, a software engineer in Beijing, loves the one-hour lunch break at noon,as it is the best time for him to check "today's special" at his favorite group buying websites . Sometimes he searches for great deals at directory sites devoted to the new shopping space. Zhao spends around 800 yuan($117.65) on group buying every month, mostly to buy food coupons for eating at some nice restaurants and occasionally to find something fun to do. " I love group buying. In addition to the competitive discounts it offers, it helps me get something fun, exciting and new, and such surprises give me a reason to try something new," he said. When he finds a really good bargain, he will send the link to friends or colleagues through MSN,QQ, or e-mail, or share the information at some social networking websites. In doing so, he often gets a certain cut off the price. At some sites, buyers are invited to leave notes about what they want to buy and the website will consider it if similar applications reach a certain number. That is how Zuo got her digital camera after waiting for two months. "It is cool. I want to buy a new digitgal camera for my trip to Switzerland this winter, but I never expected such cheap prices!" Zuo said.
Answer: group buying is becoming popular in China

Ex Output:
We can learn from the passage that _ .