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: Years ago a farmer owned land along the Atlantic. He constantly advertised for hired hands. Most people were not willing to work on farms along the Atlantic because they worried about the terrible storms that destroy buildings and crops. The farmer received a steady stream of refusals at the interview for a farmhand Finally, a short, thin man approached the farmer. "Are you a good farmhand?" the farmer asked him. "Well, I can sleep when the wind blows. " answered the little man. Although puzzled by this answer ,the farmer, desperate for help, hired him. The little man worked well around the farm ,busy from dawn to dusk, and the farmer felt satisfied with the man's work. Then one night the wind howled loudly from offshore. Jumping out of bed,the farmer grabbed a lantern and rushed next door to the hired hand's sleeping quarters. He shook the little man and yelled, " Get up! A storm is coming! Tie things down before they are blown away! " The little man rolled over in bed and said firmly, "No sir. I told you, I can sleep when the wind blows. " Enraged by the response, the farmer was tempted to fire him on the spot ,Instead, he hurried outside to prepare for the storm. To his amazement,he discovered that all of the hay had been covered. The cows were in the bam,the chickens were in the coops,and the doors were barred The shutters were tightly secured. Everything was tied down, Nothing could be blown away. The farmer then understood what his hired hand meant, so he also returned to his bed to sleep while the wind was still blowing.
Answer: Because he offered poor conditions for the hired hands.
Example Output: Why did the farmer constantly advertise for hired hands?

Example Input: Article: Fahad Azad, an engineer in India, invented a robot named DuctBot.The toy-car sized DuctBot measured 23 centimeters in length, 19 centimeters in width and 9 centimeters in height and weighs just two kilograms. The robot is designed to snake through dark, narrow air conditioning ducts and clean them.A pair of LEDs fitted on the robot light up the dirty scenery, so _ can be captured by a camera. In order to control it more easily, Mr. Azad chooses to fix DuctBot on wheels.The robot can clean off lots of dirt, as well as dead pigeons and insects.Keeping indoor air in good quality and monitoring carbon-dioxide levels in buildings with central air conditioning is a challenge.It is important in some places where clean air can mean a difference between life and death, such as hospitals.Dirty air has a bad influence on people's health. EPSCO, a Dubai-based company which specializes in improving indoor air quality, read about Mr. Azad's invention in a national newspaper after he had won an international robotics competition.EPSCO had cleaning equipment, but it needed someone to get into those ducts to do the dirty, dangerous work.Across India, for example, the task still falls to children.They are small enough to go through those ducts. In 2005, Mr. Azad who was still at university decided to do something about it.Six years later his own company, Robosoft Systems, has Bluestar, EPSCO and the Indian Navy, some leading air condition makers, as partners. Mr. Azad and his ten employees are currently exploring robot designs to examine oil tanks or sewage pipes.Their biggest challenge is to make the robots user-friendly enough.Mr. Azad hopes that the robot could eventually be operated not by engineers but by workers.There will be lots of difficulties they need to overcome in the future.
Answer: It is designed to move like a snake in the ducts.
Example Output: What can we learn about Ductbot?

Example Input: Article: Experts have put forward detailed plans for a tunnel to connect Taiwan with the Chinese mainland. The shortest proposed route would be 126 kilometers more than twice the length of the English Channel Tunnel. And the longest proposed route would be 207 kilometers. A recent conference in Xiamen, Fujian Province brought together more than 70 experts. The event was co-sponsored by universities from Taiwan and the Chinese mainland. Fujian is the province where both proposed routes would begin. There is direct passenger access between the mainland and Taiwan by air and sea at the moment. Experts say that it is better to start research sooner rather than later, although there is a lack of government funding . There are no technical problems to build a Taiwan tunnel. But it will require an improved political relationship across the Straits . A professor of Tsinghua University said, "A special feature of huge projects is that the period of preparation is longer than the period of construction." For example, he said, the English Channel Tunnel took 14 years of planning and had been discussed for two centuries. And preparations for the huge Three Gorges Dam on the Yangtze River began in the 1950s. The Xiamen conference focused on the longest southern route, which would pass Jinmen and Penghu. The first stage of the new project could be a bridge to cross the five kilometers between Xiamen and Jinmen. This would mean that travelling from Xiamen to Jinmen by car would only take five minutes. The longest tunnel now being planned anywhere in the world is the 54-kilometer land tunnel to link Lyon in France with Turin in Italy. The tunnel will not be completed until 2015-2020.
Answer: The passage doesn't mention it.
Example Output:
Which is the longest tunnel in the world at present?