instruction:
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.
question:
Article: The U. S. Postal Service (USPS) is losing billions of dollars a year. The government company that delivers "small mail" is losing out to email and other types of electronic communication. First-class mail amount fell from a high point of 104 million pieces in 2000 to just 64 million pieces by 2014. Congress permits the 600.000-empIoyee USPS to hold a monopoly over first-class and standard mail. The company pays no federal, state or local taxes; pays no vehicle fees; and is free from many regulations on other businesses. Despite these advantages, the USPS has lost $52 billion since 2007, and will continue losing money without major reforms. The problem is that Congress is preventing the USPS from reducing costs as its sales decline, and is blocking efforts to end Saturday service and close unneeded post office locations. USPS also has a costly union-dominated workforce that slows the introduction of new ideas or methods down. USPS workers earn significantly higher payment than comparable private-sector workers. The answer is to privatize the USPS and open postal markets to competition. With the rise of the Internet, the argument that mail is a natural monopoly that needs government protection is weaker than ever. Other countries facing declining letter amounts have made reforms Germany and the Netherlands privatized their national postal companies over a decade ago, and other European countries have followed suit. Britain floated shares of the Royal Mail on its stock exchange in 2013. Some countries, such us Sweden and New Zealand, have not privatized their national postal companies, but they have opened them up to competition. These reforms have driven efficiency improvements in all of these countries. Additional number of workers have been reduced, productivity has risen and consumers have benefited. Also, note that cost-cutting measures--such as closing tone post offices--are good for both the economy and the environment. Privatization and competition also encourage new changes. When the USPS monopoly over "extremely urgent" mail was stopped in 1979, we saw an explosion in efficient overnight private delivery by firms such as FedEx. The government needs to wake up to changing technology, study postal reforms abroad and let businessmen reinvent our out-of-date postal system.
Question: What do we know about the USPS?
Options: (A) Its great competitor is the delivery firm FedEx. (B) It is an old public service open to competitions. (C) Its employees don't pay federal, state or local taxes. (D) It has complete control of first-class and standard mail.
Asnwer: A
answer:
No

question:
Article: Iceland, an island just south of the Arctic Circle, has fairly mild winters, thanks to warm ocean currents. Time your vacation here during the winter months to take advantage of off-season deals. Off-season means good deals on flights, hotels and tours. You may also find that the locals are a bit friendlier and more welcoming when tourists aren't arriving in crowds. In the winter months, there are less than seven hours of daylight; thus, chances are good you'll catch sight of the northern lights. Sunsets are also beautiful at this time, making for some great photo opportunities. In Iceland, winter is the perfect time to hike glaciers, go ice climbing, explore caves made out of hardened lava and much more. One of the most popular activities is off-roading in a specially-equipped "super jeep". Before booking your trip, be sure to check for volcano alerts. There are about 130 volcanoes on or around Iceland. Thirty-five of them are active. In 2010, a volcano named Eyjaallajokull exploded, sending clouds of ash up to four kilometers into the atmosphere. The ash drifted toward the UK and Europe. Because the ask could damage aircraft engines, airlines operating in the region were forced to cancel flights for six days. As a result, thousands of people were stuck in airports. Recently, another volcano named Bardarbunga has become active, erupting ash into the air. Such events, if large enough, could prevent your trip from going ahead. So check the latest volcano news prior to making your reservations.
Question: According to this article, why are you more likely to see the northern lights in the winter?
Options: (A) They move from rural areas to cities. (B) The weather is more stable at that time. (C) They're a special feature of many festivals. (D) The sky is dark for longer periods then.
Asnwer: C
answer:
No

question:
Article: Europe's deadly outbreak of a rare form of E. coli bacteria has brought new attention to food safety issues. One of the problems when people get sick from food is that the simplest question is often difficult or even impossible to answer. Just what did the people eat that made them sick? Of course, one way to avoid these medical mysteries is to keep dangerous organisms out of the food supply. This is easier said than done, but scientists keep looking for new ways. Scientists in the United States have developed an experimental system that uses a high-tech optical scanner. The system is designed to identify the presence of contaminants like soil or animal waste on fresh produce. These can be sources of E. coli. E. coli bacteria naturally live in the intestines of humans and many animals. Most kinds of E. coli are harmless but some can make people sick. The new scanner can also show damage and imperfections that might make the produce unappealing to shoppers. Scientists designed the system at a Department of Agriculture research center in Beltsville, Maryland. Moon Kim of the Agricultural Research Service led the team. MOON KIM: "We were requested, we were asked, to develop a method to detect contamination in produce. So we started with the apple as the model sample." The scanner uses a high-speed camera placed over the conveyer belt that moves the produce along. As the apples move along the belt, the scanner captures images of each piece of fruit. Moon Kim says the team hopes the system will be available before long. MOON KIM: "We are targeting for development in commercial plants for the next several years." The scanner can direct a sorting machine to separate the bad apples from the good ones. The system is currently able to show the surface of only half the apple as it speeds by. The inventers hope to improve the process so it can show the whole surface.
Question: What is the main topic of the text?
Options: (A) Bacteria. (B) A high-tech scanner. (C) A camera (D) Food safety.
Asnwer: C
answer:
No