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.

Let me give you an 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
The answer to this example can be: Researchers did experiments on kids in order to find out _ .
Here is why: It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment.

OK. solve this:
Article: A friend of mine named Paul received an expensive car from his brother as a Christmas present.On Christmas Eve when Paul came out of his office,a street urchin was walking around the shining car."Is this your car,Paul?"he asked. Paul answered,"Yes,my brother gave it to me for Christmas." The boy was surprised."You mean your brother gave it to you and it didn't cost you nothing?Boy,I wish..." He hesitated. Of course Paul knew what he was going to wish for.He was going to wish he had a brother like that. But what the boy said surprised Paul greatly. "I wish," the boy went on,"that I could be a brother like that." Paul looked at the boy in surprise, then he said again, "Would you like to take a ride in my car?" "Oh yes,I'd love that." After a short ride,the boy turned and with his eyes shining,said,"Paul,would you mind driving in front of my house?" Paul smiled a little.He thought he knew what the boy wanted.He wanted to show his neighbours that he could ride home in a big car. But Paul was wrong again. "Will you stop where those two steps are?" the boy asked. He ran up to the steps. Then in a short while Paul heard him coming back, but he was not coming fast. He was carrying his little crippled brother. He sat him down on the step and pointed to the car. "There she is, Buddy, just like I told you upstairs. His brother gave it to him for Christmas and it didn't cost him a cent. And some day I'm going to give you one just like it...then you can see for yourself all the nice things in the Christmas windows that I've been trying to tell you about." Paul got out and lifted the boy to the front seat of his car. The shining-eyed older brother climbed in beside him and the three of them began an unforgettable holiday ride. :urchin hesitate neighbour crippled cent
Answer: Paul told him about the car
Answer:
The street urchin was very surprised when _ .