Given the task definition, example input & output, solve the new input case.
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
Output: Researchers did experiments on kids in order to find out _ .
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 case for you: Article: Wild animals seem to have escaped the Indian Ocean tsunami , adding weight to ideas they possess a "sixth sense" for disasters, experts said on Thursday. Sri Lanka wildlife officials have said the giant waves that killed over 24,000 people along the Indian Ocean island's coast seemingly missed wild beasts, with no dead animals found. "No elephants are dead, not even a dead hare or rabbit. I think animals can sense disaster. They have a sixth sense. They know when things are happening," H.D. Ratnayake, deputy director of Sri Lanka's Wildlife Department, said on Wednesday. The waves washed floodwaters up to 3 km (2 miles) inland at Yala National Park in the southeast, Sri Lanka's biggest wildlife reserve and home to hundreds of wild elephants. "There has been a lot of evidence about dogs barking or birds migrating before volcanic eruptions or earthquakes. But it has not been proven," said Matthew van Lierop, an animal behaviour specialist at Johannesburg Zoo. "There have been no specific studies because you can't really test it in a lab or field setting," he said. Other authorities agreed with this conclusion. "Wildlife seem to be able to pick up certain phenomenon, especially birds. There are many reports of birds detecting coming disasters," said Clive Walker, who has written several books on African wildlife. Animals certainly rely on the known senses such as smell or hearing to avoid danger such as predators . The idea of an animal "sixth sense" is a lasting one that the evidence on Sri Lanka's damaged coast is likely to add to.
Answer: why animals can save them from natural disasters
Output:
This passage is mainly about _ .