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 input: 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 output: 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.
Q: Article: Rescuers have found the bodies of over 130 people killed in two ferry disasters in Bangladesh.The accidents happened during a storm that hit the country on April 21st.Hundreds more are missing or feared to be dead. The two ferries sank in different rivers near the capital city of Dhakfi as strong winds and rain hit the South Asian country.The government has since banned all ferries and other boats from traveling at night during the April-May stormy season. One of the ferries,MV Mitali,was carrying far more people than it was supposed to.About 400 passengers fitted into a space made for just 300,police said.The second ferry carried about 100 passengers. "The number of deaths is certain to rise."said an official in charge of the rescue work."No one really knows how many people were on board the ferry or how many of them survived." Ferries in Bangladesh don't always keep passenger lists,making it difficult to determine the exact number of people on board.Besides the ferry accidents,at least 40 people were killed and 400 injured by lightning strikes.falling houses and trees and the sinking of small boats.Storms are common this time of year in Bangladesh,as are boating accidents.Ferry disasters take away hundreds of lives every year in a nation of 130 million people.Officials blame these river accidents on a lack of safety measures, too many passengers in boats and not enough checks on weather conditions. Ferries are a common means of transport in Bangladesh.It is a country covered by about 230 rivers.Some 20,000 ferries use the nation's Waterways every year.And many of them are dangerously overcrowded.Since 1977, more than 3,000 people have died in some 260 boating accidents.
Answer: In the afternoon.
A:
The two ferry disasters occurred _ .