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 Q]: Article: This story took place a long time ago. But it has been repeated time and time again. Everyone is moved by the true story. An old man was knocked down by a car and was taken to hospital. He was badly hurt, and during his few returns to consciousness, he repeatedly called for his son. None knew where his son was. A dirty letter was found in his pockets. The nurse learned that his son was a solider inprefix = st1 /North Carolina. The hospital called the Red Cross offices to find the young man. The young solider was rushed to the airport in time to catch the plane. It was evening when the young solider walked into the hospital. A nurse took him into the bedsides of the old man. "Your son is here," she said to the man. She had to repeat the words several times before the old man's eyes opened. He dimly saw the young man and got great comfort. He reached out his hand. The young solider held the old man's hand and offered words of hope. All through the night the young solider sat besides the bed. The nurse offered to watch instead of him for a while. He refused. At dawn the old man died. The nurse started to comfort him but the solider asked her, "Who was that old man?" "He was your father," she answered. "No, he wasn't. I never saw him before." "I knew right away there was a mistake, but I also knew he needed his son, and his son just wasn't here. I realized I was needed. So I stayed."
Answer: He was seriously injured and would die soon.
[EX A]: What is true about the old man?

[EX Q]: Article: Since we started offering China private tour packages on North-America market in 2006, CTSI has enjoyed great reputation. Whether you design your tour route or choose one of our pre-designed packages, we will be able to provide a private tour for you.You will be served by professional bilingual personal guide, experienced bus driver and private air-conditioned van. Features Group organizer travels free, and even the Chinese visa is free. If you organize a group of 15 people or more with the same route, we will offer you, the organizer, a free trip, regardless of whether you design your own route or choose one of our tour packages.This is our way of showing gratitude to you as a tour organizer.We even give you a free Chinese Visa.Is that amazing? As an organizer, your main job is to find tour members.Once the tour route and travel arrangements are confirmed, your task as an organizer is completed and you get ready to enjoy the free trip. Pick your favorite Airlines Airfares are a big determining factor of the tour price.CTSI, with strong ties with almost all the airlines that fly between North America and Asia, offers the best price on flight tickets to China and meets various needs of customers. If you are seeking low-priced tickets to China, you can choose a flight with a layover ,such as Korean Air, Air Canada, and Cathay Pacific. Chinese Airlines usually offer huge discount on China domestic flights if you purchase both the international and China domestic parts together.[:,,Z,X,X,K] If you wish to save on flying time, we would recommend direct flight provided by America Airlines and United Airlines. Flexibility Sightseeing Spots: you can change or cancel, even add some sightseeing spots when you are on the tour. Timing: you set up the departure and return time of the day, as well as the sightseeing time in specific sightseeing spots. Trip cancellation: some member may cancel the trip in last minute, and huge fines may occur.Do not worry, if you can find someone to replace you, we save you more than 80% of the fines.
Answer: He should organize at least 15 tourists with the same route.
[EX A]: What should one do if he wants to enjoy a free trip?

[EX Q]: Article: As more people use smart phones to pay bills and store personal information, strict password security has become more important than ever. A new study shows that free - form gestures - sweeping fingers in shapes across the screen of a smart phone--can be used to unlock phones. These gestures are less likely to be observed and reproduced by others than traditional typed passwords. "All that it takes to steal a password is a quick eye," said one of the researchers of the study. "With all the personal information we have on our phones today, improving their security is becoming increasingly necessary." In developing a secure solution to this problem, the researchers studied the practicality of using free - form gestures. With the ability to create any shape in any size and location on the screen, the gestures were popular as passwords. Since users create them without following a template, the researchers predicted these gestures would allow for greater complexity. The researchers carried out a create - test - retest experiment where 63 people were asked to create a gesture, recall it, and recall it again 10 days later. The gestures were captured on a recognizer system designed by the team. Using this data, they tested the complexity and accuracy of each gesture using information theory. The result of their analysis is that people are favorable to use free - form gestures as passwords. To put their analysis into practice, the researchers then had seven students in computer science and engineering, each with considerable experience with touchscreens , attempt to steal a free - form gesture password by observing a phone user secretly. None of them were able to copy the gestures with enough accuracy. The gestures appear to be extremely powerful against attacks. Though the testing is in its early stage and widespread adaptation of this technology is not yet clear, the research team plans to continue to analyze the security and management of free - form passwords in the future. They believe this is the first study to explore free - form gestures as passwords. They will soon publish their findings.
Answer: They are improving mobile security in a way.
[EX A]:
What can we learn about free - form gestures?