In this task, you're given an article, a question which often contains a blank, four options (associated with "A", "B", "C", "D") and the answer to that question. Your task is to classify whether the given answer is correct or not by providing "Yes" or "No", based on the article.

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.
Question: The Hywind project uses totally new technology to ensure the stability of _ .
Options: (A) the cables which tie the spar to the ocean floor (B) the spar which is floating in deep-sea water (C) the blades driven by strong and steady sea wind (D) the stones filled in the spar below the sea surface
Asnwer: C

A: No
****
Q: Article: In spring, you may have seen white foam on a green tree or other plants. As a matter of fact, the foam is where young spittlebugs live. These insects are protected by the foam, and they usually don't do much harm to the plants. As we all know, in late summer, a mother spittlebug lays her eggs on the plant. The babies will hatch in spring. After they come to the new world, they begin to eat juice from the plant. The babies eat more juice than their bodies need for food. The extra juice mixes with a special waste that the spittlebugs produce. When this fluid is released, it mixes with the air, forming bubbly foam. What is so great about having a foam home? The space inside is so wet that it can keep the bugs' soft bodies from drying out. And the foam tastes bad, so it keeps away most animals that would eat the bugs. Some birds will reach their heads through the foam to find the bugs. Wasps and ants might eat them, too. But most of the bugs stay safe inside the foam. Once the bugs have grown into adults, they stop making foam. They leave their homes and jump from plant to plant in search of food. The adults look a little like tiny frogs. For this reason they are also called froghoppers. If you see some foam on a plant, you might want to take a careful look inside. Gently push some of the foam aside with a small stick. Deep inside you may see a few insects eating plant juice. They might also be making more foam. Be sure to push the foam back after a moment to cover the insects and keep them safe. Soon the spittlebugs will grow up and leave their foam home. They will join the other insects in the grassland.
Question: The eggs of spittlebugs _ .
Options: (A) are laid in late spring (B) have to pull through a winter before they hatch (C) are protected by mother spittlebugs all the time (D) will be eaten by ants
Asnwer: B

A: Yes
****
Q: Article: Immigration is the act of coming to a foreign country to live. The act of leaving one's country to settle in another is called emigration. Immigrants who flee their country because of persecution, war, or such disasters as famines or epidemics are known as refugees or displaced persons. Most people find it very hard to pull up roots in their native land and move to a strange country. But throughout history, countless millions of people have done so. The heaviest immigration worldwide took place from the early 1800's to the Great Depression, the economic hard times of the 1930's. In that period, about 60 million people moved to a new land. Most came from Europe. More than half immigrated to the United States. Other destinations included Canada, Argentina, Brazil, Australia, New Zealand, and South Africa. Today, the availability of fast, safe, and cheap transportation helps make migration easier. Asia is replacing Europe as the major immigrant-sending area. The United States remains the chief receiving nation. People abandon their homeland and move to another country for various reasons. The main reason for immigration has long been economic opportunity----the desire for better land or a better job. During the 1800's, for example, the rich prairie land of the United States attracted many European farmers. Today, professional people commonly emigrate because of better opportunities elsewhere. Such emigration has sometimes been called brain drain. Many doctors and nurses and numerous engineers and scientists have moved to the United States. Religious persecution has led many people to move to a new land for the freedom to practice their faith. Such immigrants include Jews expelled from England in the 1200's. Wars, revolutions, and political unrest have driven innumerable people to find new homes. In the 1990's alone, millions of refugees fled from warfare in Afghanistan, Iraq, Liberia, Iran, Uganda, Southeastern Asia, and Central America. Some immigrants were brought to a new land against their will. From the 1500's to the 1800's Europeans shipped black Africans to the Western Hemisphere as slaves. The United Kingdom transported prisoners to Australia from the late 1700s to the 1860s to relieve over crowding in British jails. Before that time, the United Kingdom sent prisoners to the American colonies. Immigrants have made enormous contributions to the culture and economy of such nations as Australia, Canada, New Zealand the United States. But their accomplishments have been made with great difficulty. At times, the United States, like many receiving countries, has restricted immigration to maintain a more homogeneous society in which all the people share the same ethnic, geographic, and cultural background. Although some immigration laws have been relaxed, many new comers of different backgrounds still face challenges in gaining acceptance.
Question: Most Immigrants to the United States in the nineteenth century came from _ .
Options: (A) Europe (B) Asia (C) Australia (D) South Africa
Asnwer: A

A:
Yes
****