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.

Ex Input:
Article: Sitting on a chair all day in school can make anyone want to move around. So, more and more teachers are letting students have a ball. By sitting on exercise balls instead of chairs , teachers find students' posture and attention improve. Dottie Pownall, a fifth-grade teacher in West Virginia, USA, has been using balls as chairs since December 2008. "The students love them", she says. Pownall took a survey of her students. She found that 80% of the students thought sitting on the balls helped them pay more attention to what they were learning. The teacher, Pisa Witt, felt so strongly about the use of balls as chairs, she started Witt Fitt. This company encourages the use of the balls. And the company educates not only teachers but also students on how to use them. "Our products are used in 24 states, three provinces in Canada, Puerto Rico and Japan," says Witt, " Research shows that sitting on the balls makes them sit up straighter . You can slouch on a ball," says Witt, "but it feels bad." Because the students are moving, their blood increases. That carries more oxygen( ) to the brain , so the kids have more energy and can pay attention longer. "Besides, they're fun." says Pownall.
Question: What will happen if a student sits on a chair all day in school? The student will _ .
Options: (A) pay more attention to his lessons (B) be fun (C) like to move around (D) sit up straighter
Asnwer: C

Ex Output:
Yes

Ex Input:
Article: With more and more wineries offering organic varieties to lower their eco-footprint , it's no surprise that they're looking at the environmental impacts of their packaging as well. The making of conventional glass bottles and the corks uses large quantities of natural resources and causes a lot of pollution. Beyond manufacturing, the transport of wine in glass bottles across the country and around the world also has its environmental effect. Trucking all the heavy glass bottles causes a much larger carbon footprint than the transportation of much lighter boxed wine. Almost half the weight of an ordinary case of wine comes from the bottles; about 95 percent of the weight of a case of boxed wine is the wine itself. "A standard wine bottle holds 750 milliliters of wine and causes about 5.2 pounds of carbon dioxide when it travels from a farm in California to a store in New York," reports Colman, a researcher. "A 3-liter box causes about half the carbon dioxide per 750 milliliters." According to the Wine Group, the third largest wine company in the world and a big advocate for switching away from glass bottles, there are other advantages to boxed wine (which typically includes a plastic bag within a cardboard box). The vacuum packaging of boxed wine allows it to stay fresh for up to six weeks in the fridge once the seal is broken and the first glass has been poured. Still, despite the benefits, boxed wine may still be a tough pill to swallow for many wine experts. "Even those traditionalists who are coming around to the idea that maybe screw caps are fine for some wines, would not like the idea of a cellar full of cardboard boxes," says wine writer Lee Asbell. "It is difficult to imagine how wine service at fine-dining establishments would handle such a change." For now, boxed wine is still the field of cheaper brands. But that could all change as more and more wine makers and drinkers take responsibility for saving the Earth.
Question: Compared with glass bottled wine, boxed wine _ .
Options: (A) wastes more natural resources (B) is difficult to transport (C) causes less eco-footprint (D) takes up more space
Asnwer: B

Ex Output:
No

Ex Input:
Article: Cotton farmers in some Indian villages are busily buying Coca-Cola and Pepsi, believing that the sugar in the fizzy( ) drinks kills pests. Farmers say scientists advised them to mix pesticides with a sugary juice to control pests, and they found the mixture cheaper and more effective than pure chemicals-- although soft drink makers and scientists dismissed the remarks. N. Hamunayya, who has become a famous person in his village in the southeastern state of Andhra Pradesh, said his crop survived an attack of pests which had resisted other pesticides. "We found that all the colas had uniform effect on pests. The pests became dead and fell to the ground, "he said. He said the drinks had all the elements they needed : they were cheaper, sticky, fizzy, and attracted ants, which ate the young of the pests. But Thinupathi Reddy, assistant director of the Regional Agri-Research Station, Guntur, says tests had proved such results wrong. "We conducted some field trials on cotton crop at our research station. There was no obvious productivity or destruction of pests, "he says. Statements from Pepsi and Coca-Cola said there was " no scientific basis" for _ . But their dealers are enjoying increasing sales. Mantan Wall, who sells soft drinks in 17 villages in the region, said sales rose up, thanks to the farmers. " For the 10 days between August and September I had successful business. Instead of just 30 cases( each containing a dozen one-litre bottles) of cola, I started selling almost 200 cases, "he said. " We expected the sales to drop after the news over pesticide residues( ) in the cola drinks. Now I have to keep extra supply for the cotton farmers, "he said. In February, an Indian environment group made a report saying drinks made by Coca-Cola and Pepsi contained pesticides and called for tougher safety standards. The U. S firms strongly rejected the findings of the New Delhi-based Centre for Science and Environment and said their products were safe.
Question: The writer' s purpose of writing this passage is to _ .
Options: (A) tell an interesting incident (B) warn people that some drinks might be dangerous to health (C) suggest using Coca-Cola to kill pests. (D) announce a new discovery of Coca-Cola
Asnwer: A

Ex Output:
Yes