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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: Many reasons can explain why football is so popular. All around the world, millions play the sport and many more like to watch it. Some would say that the simplicity of the game is the main reason for its popularity, but that can't be true as, this way, marathons or races would be the most popular sports in the world. In fact, the most popular sport in the world is football. The main reason for the popularity of any sport is the room for creativity inside the sport. Football has plenty of room for creativity as it enables players to use their bodies in unique ways to get hold of the ball and score while at the same time keeping the other team from scoring. In addition to this, the rules ensure that the game is clean and fair, thus encouraging new players to play it. Another reason is that this game doesn't require expensive equipment. All the kids in poor developing countries like playing it as all they need to play it is a ball and an empty playground, and that would ensure a quality time for a group of kids who want to enjoy their time. The Federation International de Football Association (FTFA) knows _ and is always trying to keep the rules and regulations applicable for poorer countries. For fans of the sport, it is very entertaining to watch the skills and talents of the players in professional matches. The outcome of a match can easily change in the dying moments of a game. Some matches are even better than watching a thriller, because you really have no idea what the result of the match will be.
Answer: playing football can help poor kids earn money
Solution:
We can learn from the text that _ .