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: Baby sign language is a growing movement. Pointing to a color1ful flower, Campbell lifts her baby's soft hand, and rapidly moves it from one side of his nose to the other as she sniffs ."Flower!" she says loudly. Gregory smiles and looks carefully. It could be a year before Gregory, 4 months old, can speak, but now his mother hopes to communicate with her baby through sign language. Like others around the world, Campbell is part of a growing movement of parents teaching hearing babies simple signs to communicate before they can talk. The baby sign language has been more popular in recent years. The movie,"Meet the Fockers",where the main character teaches his young grandson to sign, makes it well developed. Babies generally begin to talk between 12 and 15 months, but babies can use sign language to communicate before they learn how to speak. "We know they are learning language faster than they are able to show you with their speech production because that system takes a long time to develop." says McRoberts, director of developmental research at the Haskins Laboratories. "They are understanding words before they are able to say them. From around 16 to 18 months, they might say 50 words but understand 200.They understand short sentences well." says McRoberts. Studies have shown deaf children learn to use sign language earlier than hearing children learn to speak meaningfully. As to whether hearing babies can communicate earlier with sign language, McRoberts says,"I think that's still unknown. It may not. I'm very interested in that very question."
Answer: communicate with their babies
Solution:
Many parents teach their babies sign language mainly to _ .