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: A mystery surrounds my grandmother's collection of salt cellars . No one in the family seems to know when she started collecting them, or exactly how many she had. My grandmother died just over two years ago. At 91, she had spent 30 years without her right leg, which was removed due to cancer the year I was born. She was a poet, an artist, a food lover and a salt cellar collector. The funny thing about the salts, as she called them -- I never once heard her say salt cellar -- was that although everybody knew they were her hobby and everyone was always searching for them at yard sales or in stores, nobody seemed to know what they meant to her and they just wanted to make her happy. Grandma kept her salts in a dark wooden corner display case in the living room. Since her death the case has remained exactly as she left it. Grandpa tries his best to preserve his memories of her just as they are. Now I am collecting, too. Collecting memories about my grandmother's hobby, a way she spent her time. And as I hold one of them in my hand, I picture her holding it in her hand on the day she got it. She is smiling. My mother and her two sisters all have small collections, but my mother admits that she was more interested in finding salts to send to Grandma. Grandma once wrote a poem titled "When April Comes". The poem contains the line, "When April comes and I am not around, remember me when daffodils are found." Now, Grandpa is working on a poem with the line, "April came and you were not around". But she was, somehow. She was there in the memories left behind by her possessions.
Answer: her curiosity about her grandma's possessions
Solution:
In writing the text, the author expressed_.