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.
One example: Article: Homework can put you in a badmood , and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children. The first experiment tested 30 kids. Someshapes were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes. In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others. The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted kids from finding shapes. While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay.
Answer: whether mood affects their learning ability
Solution is here: Researchers did experiments on kids in order to find out _ .
Explanation: It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment.

Now, solve this: Article: The new iPhone 3G should please everyone . Its look and feel are only slightly improved, but a faster network loads Web pages more quickly , true GPS functionality allows it to easily find places nearby , and the new $199 price(down from $400) makes it an affordable luxury. Before deciding whether to buy, however , make sure you can actually take advantage of the iPhone 3G's high-speed data network. 3G stands for third-generation , which in non-geek speak translates to Web pages and mail messages that, ideally, load about three times faster than on the original iPhone. Even better, 3G coverage enables you to make a phone call and surf the Web at the same time . That's great, if you live or work in a place where the 3G network of AT&T (the sole wireless carrier of the iPhone) is active. That's not so great in cities like New York where AT&T's cellular coverage is awful. As one of my colleagues in New York City, who bought the original iPhone , commented , "It's just a toy . You can't make phone calls on it, so I carry my Verizon phone with me all the time." The real fun begins when you tap on the icon called "Apple Store" and start browsing the hundreds of add-on applications that have been developed just for the iPhone. You will find tons of games (I like JirboBreak , a free game inspired by the Atari classic Breakout ) and mobile version of popular websites like Pandora , Facebook , MySpace and the New York Times . Most apps will cost you , but the vast majority are $9.99 or less. The apps work on the old iPhone too, but you'll enjoy them a lot more on the iPhone 3G because many of the programs , including Yelp(local business reviews ), Whrrl (mobile social networking) and UrbanSpoon(restaurant reviews), use you exact location --- provided by the iPhone 3G's GPS chip --- to make recommendations. The apps also load much faster over the 3G network.
Answer: it is too expensive for people to buy
Solution:
. The new iPhone 3G has following features except that _ .