You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

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 _ .
Why? 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: Article: "Let's go down one more, push your enter key..." says a volunteer helping senior citizens work a web session on the Inter-net. David Lansdale has found a way to light up the lives of the elderly. He gets them wired to the Internet. " If you hit your enter key, it will bring up this particular e-mail..." Pauline Allen is one of those who has started using the Internet," I thought I was through with life, I was ready for a rocking chair, because I was 86 years old. And I haven't found the rocking chair yet. " " You found the keyboard?" asks the reporter. " That's right, I found the keyboard. " The average age of Lansdale's students is around 68. All are in nursing or assisted care homes. He used family relationships to introduce them to the World Wide Web. David Lansdale says," Here they are in California, the family was back in New York, the opportunity to connect, to cross the time and space, was incredibly precious (valuable) to them. " "I hear you are so beautiful. " Lillian Sherly writes an e-mail to a newborn great granddaughter. Working with one another, the senior learn as a group. They learn to master the Internet and to overcome what Lansdale calls the maladies of the institutionalized :loneliness, helplessness, boredom, and loss of memory. Mary Harvey says," Bingo just doesn't interest me. But this does, believe me, this does. " Ninety-four-year-old Ruth Hyman is a star pupil and instructor. She says," When I send a letter to my grandchildren, and great grandchildren, they hang it up in their offices, just like I used to hang their drawings on my refrigerator. Ha, ha. " David Lansdale says," There's a collective benefit. There is an element of treatment. Remember we started as a support group. " Dixon Moorehouse says,"I just wish I was 15 years old and getting to learn all this. " The senior calls their weekly meetings Monday Night Live. And many say the meetings have given them new life. Ruth Hyman says," Three years ago, they told me I wasn't going to live. But I showed them, and got work, and I've worked ever since.
Answer: keep the health of the mind of the senior
Solution:
The purpose of David Lansdale's work is to _ .