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.

[EX Q]: Article: For thousands of years, people have been debating the meaning of happiness and how to find it. From the ancient Greeks and Romans to current day writers and professors, the debate about happiness continues. What makes someone happy? In what parts of the world are people the happiest? Why even study happiness? The Greek philosopher Aristotle said that a person's highest happiness comes from the use of his or her intelligence. Religious books such as the Koran and Bible discuss faith as a form of happiness. The British scientist Charles Darwin believed that all species were formed in a way so as to enjoy happiness. People throughout history may have had different ideas about happiness. But today, many people are still searching for its meaning. How do you study something like happiness? You could start with the World Database of Happiness at Erasmus University in prefix = st1 /Rotterdam, The Netherlands. This set of information includes how to define and measure happiness. Some findings are not surprising. For example, the database suggests that married people are happier than single people. People who like to be with other people are happier than unsocial people. But other findings are less expected: People with children are equally happy as couples without children. And wealthier people are only a little happier than poorer people. Positive psychology is the new term for a method of scientific study that tries to examine the things that make life worth living instead of life's problems. Traditional psychology generally studies negative situations like mental suffering and sickness. But positive psychology aims to study the strengths that allow people and communities to do well. There is also an increasing amount of medical research on the physical qualities of happiness. Doctors can now look at happiness at work in a person's brain using a method called magnetic resonance imaging , or MRI. For example, an MRI can show how one area of a person's brain activates when he or she is shown happy pictures. A different area of the brain becomes active when the person sees pictures of terrible subjects.
Answer: the strong belief in religion
[EX A]: The Bible tells us happiness comes from _ .

[EX Q]: Article: Hundreds of years ago, a Roman army came north from England to make war on Scotland. The Scots, a brave people, love their country. They fought hard to drive the enemy out of Scotland. But there were too many of the Romans. It looked as if the Romans would win. One night, the leader of the Scots marched his soldiers to the top of a hill. "We will rest here tonight, my men," he said, "Tomorrow we will fight one more battle. We must win, or we will die." They were all very tired. So they ate their supper quickly and fell asleep. There were four guards on duty, but they were very tired, too, and one by one, they fell asleep. The Romans were not asleep. Quickly they gathered at the foot of the hill. Slowly they went up the hill. Closer they came to the sleeping Scots. They were almost at the top. A few minutes more the war would be over. Suddenly, one of them put his foot on a thistle . He cried out and his sudden cry woke the Scots. In a minute they were on their feet and ready for a battle. The fighting was hard, but it did not last long. The Scots wiped out the Romans and saved Scotland. The thistle is not a beautiful plant. It has sharp needles all over it. Few people liked it. But the people of Scotland liked it so much that they made it their national flower.
Answer: came to the north Scotland from England to make war on Scotland
[EX A]: Hundreds of years ago, the Romans _ .

[EX Q]: Article: According to the US government, wind farms off the Pacific coast could produce 900 gigawatts of electricity every year.Unfortunately, the water there is far too deep for even the tallest windmills to touch bottom.An experiment under way off the coast of Norway, however, could help put them anywhere. The project, called Hywind, is the world's first large-scale deepwater wind turbine .Although it uses a fairly standard 152-ton, 2.3-megawatt turbine, Hywind represents totally new technology.The turbine will be fixed 213 feet above the water on a floating spar, a technology Hywind's creator, the Norwegian company StatoilHydro, has developed recently.The steel spar, which is filled with stones and goes 328 feet below the sea surface, will be tied to the ocean floor by three cables ; these will keep the spar stable and prevent the turbine from moving up and down in the waves.Hywind's stability in the cold and rough sea would prove that even the deepest corners of the ocean are suitable for wind power.If all goes according to the plan, the turbine will start producing electricity six miles off the coast of southwestern Norway as early as September. To produce electricity on a large scale, a commercial wind farm will have to use bigger turbines than Hywind does, but it's difficult enough to balance such a large turbine so high on a floating spar in the middle of the ocean.To make that turbine heavier, the whole spar's center of gravity must be moved much closer to the ocean's surface.To do that, the company plans to design a new kind of wind turbine, one whose gearbox sits at sea level rather than behind the blades. Hywind is a test run, but the benefits for perfecting floating wind-farm technology could be extremely large.Out at sea, the wind is often stronger and steadier than close to shore, where all existing offshore windmills are planted.Deep-sea farms are invisible from land, which helps overcome the windmill-as-eyesore objection.If the technology catches on, it will open up vast areas of the planet's surface to one of the best low-carbon power sources available.
Answer: the spar which is floating in deep-sea water
[EX A]:
The Hywind project uses totally new technology to ensure the stability of _ .