In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Ex Input:
Article: Women are friendly. But men are more competitive. Why? Researchers have found it's all down to the hormone oxytocin . Although known as the love hormone, it affects the sexes differently. "Women tend to be social in their behavior. They often share with others. But men tend to be competitive. They are trying to improve their social status," said Professor Ryan. Generally, people believe that the hormone exytocin is let out in our body in various social situations and our body creates a large amount of it during positive social interaction such as falling in love or giving birth. But in a previous experiment Professor Ryan found that the hormone is also let out in our body during negative social interactions such as envy. Further researches showed that in men the hormone oxytocin improves the ability to recognize competitive relationships, but in women it raises the ability to recognize friendship. Professor Ryan's recent experiment used 62 men and women aged 20 to 37. Half of the participants received oxytocin. The other half received placebo . [( )] [( :Love my Dog.)] After a week, the two groups switched with participants. They went through the same procedure with the other material. Following each treatment, they were shown some video pictures with different social interactions. Then they were asked to analyze the relationships by answering some questions. The questions were about telling friendship from competition. And their answers should be based on gestures, body language and facial expressions. The results indicated that, after treatment with oxytocin, men's ability to correctly recognize competitive relationships improved, but in women it was the ability to correctly recognize friendship that got better. Professor Ryan thus concluded: "Our experiment proves that the hormone oxytocin can raise people's abilities to better distinguish different social interactions. And the behavior differences between men and women are caused by biological factor that are mainly hormonal."
Answer: Oxytocin.

Ex Output:
What causes men and women to behave differently according to the text?

Ex Input:
Article: Reducing the amount of sleep students get at night has a direct impact on their performance at school during the day. According to classroom teachers, elementary and middle school students who stay up late exhibit more learning and attention problems. This has been shown by Brown Medical School and prefix = st1 /BradleyHospitalresearch. In the study, teachers were not told the amount of sleep students received when completing weekly performance reports, yet they rated the students who had received eight hours or less as having the most trouble recalling all the material, learning new lessons and completing high - quality work. Teachers also reported that these students had more difficulty paying attention. The experiment is the first to ask teachers to report on the effects of sleep deficiency in children. Just staying up late can cause increased academic difficulty and attention problems for otherwise healthy, well - functioning kids, said Garharn Forlone, the study's lead author. So the results provide professionals and parents with a clear message: when a child is having learning and attention problems, the issue of sleep has to be taken into consideration. "If we don't ask about sleep, and try to improve sleep patterns in kids' struggling academically, then we aren't doing our job", Forlone said. For parents, he said, the message is simple, "getting kids to bed on time is as important as getting them to school on time."
Answer: Ask students to complete a sleep report

Ex Output:
What were teachers told to do in the experiment?

Ex Input:
Article: The State Council submitted a bill which aims to allow couples to have two children if either parent is an only child. It focuses on adjusting and improving the family planning policy. The State Council argues adjustment to the policy in the face of a steadily declining birth rate. The birth rate has remained relatively low and shows a tendency to fall further. The rate has dropped to between 1.5 and 1.6 since the 1990s, which means each Chinese woman of child-bearing age gives birth to 1.5 to 1.6 children on average. The working population began to drop in 2012 by 3.45 million every year, and it is likely to fall by 8 million each year after 2023. The population aged 60 and above will reach 400 million and account for one-fourth of the total population in the early 2030s, up from one-seventh now. "If the current family planning policy continues, the birth rate will continue to fall and lead to a sharp drop of the total population after reaching a peak," said Li Bin, minister in charge of the National Health and Family Planning Commission. "It is the right time to make changes: The low birth rate is stable, the working population is still large and the burden of supporting the elderly remains relatively light," he added. An increase in birth is expected if the policy changes but will not seriously affect the food supply, public education, health care or employment. China's food safety and public service plans are designed to meet the needs of 1.43 billion population in 2020 and 1.5 billion in 2033. Even with the policy change, the total population will reach no more than 1.38 billion in 2015, Li said.
Answer: To solve the social population issue.

Ex Output:
Why did the State Council submit the bill?