Given the task definition, example input & output, solve the new input case.
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: 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
Output: Researchers did experiments on kids in order to find out _ .
It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment.

New input case for you: Article: The prisoner had waited many months for help, but none had come. Now he felt he would do something to gain his freedom, to be free again to go about the world as he wished. But he could think of no way to run away. He spent many hours thinking of his life before he was captured, regretting the mistakes he had made and dreaming of the joys he had known. And over and over he said to himself that he was being punished for no reason. He was guilty of no crime, but he had not been given a chance to explain the events which made him guilty. Then one night the guard who sat outside the prisoner's door fell asleep. When he noticed this, the prisoner was struck by a feeling of hope. Perhaps he could steal the keys while the guard was sleeping. Silently the prisoner moved toward the guard. Very gently he lifted the ring of keys from the guard's belt. Then he turned and crawled toward the door. Could he work the lock from the inside? The key turned and the door was opened. Within two minutes he had crossed the yard and climbed the wall. Then he ran across the field, free at last, a smile of joy beginning to spread across his face.
Answer: to be helped out of the prison
Output:
The prisoner had a wish _ .