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
Example solution: Researchers did experiments on kids in order to find out _ .
Example explanation: It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment.

Problem: Article: More than 2,400 years ago, a sickness struck Athens. The disease is said to have killed up to one third of all Athenians, including their leader Pericles. The huge loss of life  helped to change the balance of power between Athens and its enemy, Sparta, in the ancient world. Historians say the sickness began in what is now Ethiopia. They say it passed through Egypt and Libya before it entered Greece. Knowledge of the disease has come mainly from the writings of the ancient Greek historian Thucydides, who survived it. So what caused the fall of Athens? Now, a study based on genetic  testing says it was probably typhoid   fever.  Greek researchers announced the results. Journal of Infectious Diseases published the findings online last week. Researchers from the University of Athens tested human remains from an ancient burial place in the Greek capital. The researchers collected genetic material from teeth. They say tests found genetic evidence similar to that of the modern-day Salmonella  . Manolis Papagrigorakis led the University of Athens team. He says the findings throw light on one of the most debated mysteries in medical history. Typhoid fever is a life-threatening disease that is common today in developing countries. Experts say there are more than 21,000,000 cases each year.  Typhoid can be spread by food or drink that has been handled by a person infected with the bacteria  that causes it. Bacteria in human waste can pollute water supplies. So water used for drinking or to wash food can also spread the infection. Hand washing is important to reducing the spread of typhoid. And there are vaccines   that can help prevent it. Some people recover but continue to carry the bacteria. These carriers can get sick again. And they may continue to infect others. Doctors can do tests to make sure the bacteria has left the body. 
 Answer: introduce the seriousness of typhoid

Solution: The writer mentions the fall of Athens in order to   _  .