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.

Example Input: Article: In white shirt, blue pants, black cloth shoes and two pigtails, Jingqiu gives off an air of great "pure beauty" in Zhang Yimou's new movieUnder the Hawthorn Tree, which tells the story of the sad romance of Jingqiu and a handsome young man named Laosan set at the end of the "cultural revolution" (1966-- 1976). Before it was released, moviegoers foresaw what this "pure beauty" could be. Director Zhang complained of how long it had taken him to find the right girl for the part of Jingqiu -- a character so innocent. She believes that simply lying on the same bed as a man will make her pregnant. It was 18-year-old Zhou Dongyu who stood out from the crowd. According to Zhang, Zhou has "eyes that are clear like a fountain on a mountainside". Born to an ordinary worker's family, the Shijiazhuang girl was in her final year of high school and working hard for a place in an art college. "If you have fair skin and clear eyes, as Jingqiu does, it is easy to look pure. Girls today wear so many jewels and make-up--that's the reason Zhang was not interested," said Du Yanlai, 17, of Chengdu. While some teenagers consider such "pure" beauty _ , others believe that it speaks of something soulful. Purity is all about an innocence that shines through from within, thinks 16-year-old Tan Mengxi of Nanjing. "Being pure can be simple, not having complicated thoughts and being inexperienced. However, it doesn't mean an ignorant or native person. So, a person is pure in his or her nature if he or she is always enthusiastic and able to deal with difficult matters independently. This purity doesn't pass with time, "she said.
Answer: Being simple, enthusiastic and able to manage things alone.
Example Output: What's the real purity according to Tan Mengxi?

Example Input: Article: Sitting at a desk in a classroom all day can be pretty boring. The teachers at Ward Elementary in Winston -Salem,North Carolina ,picked up on that and traded in their students' desks for exercise bikes as a part of their Read and Ride program! The Read and Ride program began five years ago.One classroom has enough bikes for every student in any given class,and throughout the day teachers bring in their students to the room to ride them and read their books. Even regular classrooms have one bike in the back of each room for students who just can't sit still to use to help them burn energy in a good way. Students love being more active! Teachers enjoy seeing students eager to read.Parents appreciate stronger,smarter children.Headmasters value this effective and cost-free program."Riding exercise bikes makes reading fun for many kids who get frustrated when they read.Thus,they have a way to release that frustration while they ride,"said Scott Ertl,who started the program."As we can see,everyone wants to promote literacy and lose weight! But many students who are overweight struggle with sports and activities since they don't want to always be the last or lose with others watching on the playground.On exercise bikes,however,students are able to exert themselves at their own level--without anyone noticing when they slow down or take a break." As it turns out,not only are the bikes helping the students burn calories,they're also helping them learn better and stay focused.At the end of the school year the school analyzed testing data and found that students that spent more time reading and riding did more than twice as well on reading tests than their fellow students who spent the least time in the program.
Answer: To help the overweight students keep fit.
Example Output: Why did the teachers start the Read and Ride program?

Example Input: Article: It was a physical class. But it was nothing like previous ones -- the class was "attended" by over 60 million students across China, and the teacher was not even on the planet: she was 340 kilometers above the earth. "Hello, everyone. I'm Wang Yaping. I'll host your lecture today." Smiling to the camera, Wang, China's second female astronaut, started her video class on June 20 on board the Tiangong-1 space station. To show how Newton's Laws work in space, Wang and her fellow astronauts used simple items like balls and spinning tops. The highlight of the lecture was when Wang _ using a metal ring, something that only happens in zero gravity, where the surface tension of water is much higher than it is on the earth. She then took it a step further by pouring more water onto the film and turning it into a water ball, leaving the audience amazed by what they saw. The 40-minute lesson seemed to have passed too quickly for students to see enough of those magical experiments. But sending stuff into space is really expensive. According to The Beijing Times, every kilogram launched into space cost 20,000 dollars. The experimental items taken this time were all strictly selected and weighed about 2.9 kilograms in total. This adds up to quite a large price tag. The organizers of the event also had to consider the time of day: the communication signal between the earth and Tiangong-1 was best during that specific 40 minutes, when the spacecraft was flying within the coverage of all of the ground-based testing stations.
Answer: Because the lecturer was in space.
Example Output:
Why is the class different from a common one?