Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following 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: Researchers did experiments on kids in order to find out _ .
Reason: 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 instance: Article: In a survey of 1,500 European hotel managers, Americans were ranked second, behind the Japanese, as the world's best tourists. In the survey, conducted in April by the online travel site Expedia's German branch, Americans were seen as the most likely to try to speak a foreign language and the most interested in tasting local food.     Americans came in third, behind the Japanese and British, as the "most polite" tourists, and third, behind the Japanese and Germans, as "best behaved". And ---- Americans were ranked far and away as the world's most generous tippers and biggest spenders.     On the other hand, Americans were seen as the shabbiest  dressers, the most likely to complain and the second noisiest. Who is louder? Only the Italians.     Some of the other findings: Russians were as the least polite travelers, followed by the Israelis and French. The stingiest  tippers: the Germans, followed by the French and Israelis. Italians, by far, were ranked as the best dressers, followed by the French and Spanish. In terms of bad dressing, the British were a distant second to Americans, followed by the Germans.   Who's the most unwilling to try speaking in a foreign language? The French, the British and the Italians, in that order. The Chinese are the most reluctant to taste foreign food, followed closely by ---- this is strange ---- the British, whose home  _ is probably the world's most seriously laughed at ( a little unfairly, perhaps). And, finally, the overall award for "worst tourist in the world" goes to the French, with the Indians and Chinese. 
 Answer: encourage people to travel
Student:
The writer presents the passage here hoping to   _  .