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: . As the world's largest terrestrial carnivore ,the polar bear is the king of the great white north. Adult males can measure more than 9 feet in length and weigh between 770 and 1,430 pounds. The bear's body and neck are elongated, and the head is narrow and long with small, rounded ears. Polar bear populations can be found in northern Canada, Greenland, Norway and Russia, and there have been reports that polar bear tracks have been found as far north as the North Pole. The 5,000,000-square-mile range of the polar bear circles the Arctic and contains stretches of open water where seals are easily caught. Polar bears live on the annual Arctic sea ice that provides a platform from which they can hunt. They hunt seals on the sea ice by breaking into seal dens in the sea ice. The dens aren't visible from above,but seeing is less important than smelling to a polar bear -- with their keen sense of smell,polar bears can sense the breathing holes of seals in their dens beneath the snow and ice. As the southern edge of the Arctic ice cap melts in summer, polar bears are stranded on land and spend their summers fasting ,living off body fat stored from hunting in spring and winter. It might come as a surprise that this species faces an uncertain future. Climate change is causing the disappearance of sea ice from which polar bears hunt seals. Sea ice in the Arctic is melting earlier and forming later each year. With about 22,000 polar bears living in the wild,the species is not endangered at the moment, but its future is far from certain. People have reached an agreement that controls the hunting of polar bears and directs each nation to protect their habitats, but it does not protect the bears against the biggest man-made threat to their survival : global warming. If current warming trends continue, scientists believe that polar bears may disappear within 100 years.
Answer: necks
[EX A]: Polar bears search for seals mainly through their _ .

[EX Q]: Article: Each Indian was supposed to keep his birth name until he was old enough to earn one for himself.But his playmates would always give him a name of their own.No matter what his parents called him, his childhood friends would use the name they had chosen.Often it was not pleasing, such as Bow Legs or Bad Boy.But sometimes a name fit so well that the youngster found it difficult to shake it off.If he could not earn a better one from a war later, he could be stuck with a name like Bow Legs for the rest of his life. The Indian earned his real name when he was old enough for his first fight against the enemy.His life name depended on how he acted during this first battle.When he returned from the war, the whole tribe would gather and observe the ceremony in which he would be given his name by the chief.If he had done well, he would get a good name.Otherwise he might be called Crazy Wolf or Man-Afraid-Of-a-Horse.So an Indian's name told his record or described the kind of man he was. A man was given many chances to improve his name, however.If in a later battle he was brave in fighting against the enemy, he was given a better name.Some of our great fighters had as many as twelve names--all good and each better than the last. An Indian's names belonged to him for the rest of his life.No one else could use them.Even he himself could not give them away because names were assigned by the tribe, not the family.So no man could pass on his name unless the chief and the tribe asked him to do so. Sometimes an Indian would be asked to give his name to a son who had performed a noticeable deed.I know of only three of four times when this happened.It is the rarest honor for a person--the honor of assuming his father's name.
Answer: his childhood friends
[EX A]: An Indian could be given the second name by _ .

[EX Q]: Article: It is often said that politeness costs nothing. In fact, it seems that a little more could save businesses PS5 billion every year. Frequently hearing the phrase "thank you" or "well done" means the same to staff as a modest pay rise, researchers say. Praise and encouragement also makes employees more likely to work hard and stay in their jobs, saving on the cost of finding replacements. A third of 1,000 workers surveyed by the famous firm White Water Strategies said they did not get thanked at all when they did well----and a further third said they were not thanked enough, meaning they were less likely to put themselves into work and were more likely to look for employment elsewhere. The final result is around PS5.2 billion in lost productivity from employees who would raise their interests in work if they felt more appreciated, White Water claimed. According to the company, praising staff has the same motivational kick as a 1 per cent pay rise - and works out much cheaper for bosses. Three out of four employees said that regular acknowledgement by their bosses was important to them, but only a quarter said they were actually given as much praise as they felt they needed. The survey found that those blue-collar and manual workers were less likely to be given any recognition for doing well. In regional terms, Scottish staff felt most undervalued. Four out of ten workers said they were never thanked and eight out of ten said they would like more praise. However, workers in the North-East are less impressed by being praised by the boss, as only 69 per cent said they felt the need to be told "well done" regularly. Older employees and women need the most praise, according to psychologist Averill Lemmon.
Answer: sometimes politeness and encouragement cost nothing
[EX A]:
The survey done by White Water Strategies shows that _ .