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 Q]: Article: When Paul was a boy growing up in Utah, he happened to live near a copper smelter , and the chemicals that poured out had made a wasteland out of what used to be a beautiful forest. One day a young visitor looked at this wasteland and called it an awful area. Paul knocked him down. From then on, something happened inside him. Years later Paul was back in the area, and he went to the smelter office. He asked if they had any plans or if they would let him try to bring the trees back. The answer from that big industry was "No". Paul then went to college to study the science of plants. Unfortunately, his teachers said there weren't any birds or squirrels to spread the seeds. It would be a waste of his life to try to do it. Everyone knew that, he was told. Even if he was knowledgeable as he had expected, he wouldn't get his idea accepted. Paul later got married but his dream would not die. And then one night he did what he could with what he had. As Samuel Johnson wrote, "It is common to overlook what is near by keeping the eye fixed on something remote. Attainable good is often ignored by minds busied in wide ranges." Under the cover of darkness, he went secretly into the wasteland and started planting. And every week, he made his secret journey into the wasteland and planted trees and grass. For fifteen years he did this against _ . Slowly rabbits appeared. Later, as there was legal pressure to clean up the environment, the company actually hired Paul to do what he was already doing. Now the place is fourteen thousand acres of trees and grass and bushes, and Paul has received almost every environmental award Utah has. It took him until his hair turned white, but he managed to keep that impossible vow he made to himself as a child.
Question: When Paul was a boy, _ .
Options: (A) he had decided never to leave his hometown (B) the economy of Utah depended wholly on the copper smelter (C) he hit a young visitor because of his comments on the wasteland (D) he stopped the copper smelter polluting the area
Asnwer: C
[EX A]: Yes

[EX Q]: Article: The United States of America is the most culturally diverse country in the world in terms of culture religion, ethnicity and sexual orientation. As a combination of various races and cultures, America is home to all. The culture here is so unique that citizens can be just as proud of their original cultural heritage as they are to be American. What is now the US was initially inhabited by native people until the land was settled by various European groups and African slaves. Since the 20th century, the country has become a heaven for people from all over the globe . The arrival of immigrants has shifted populations from rural areas into cities because immigrants tend to settle in urban areas. At present, 81 percent of the inhabitants in the US live in cities. Cultural and ethnic diversity adds a unique flavor to cities that is expressed through distinct neighborhoods, restaurants, places of worship, museums, nightlife and multicultural learning environments. Unique musical forms, such as jazz, rock and roll, Chicano music, and the blues, grow in the US by mixing a variety of culturally distinct musical traditions to create a new form. At the executive level, the country is headed by a mixedrace president; two posts on the Supreme Court are held by members of the country's two largest minorities.There is also diversity in state and local governments. Without its rich mixture of races and cultures, America would not be the nation that it is today. Founded upon the basis of equality and freedom, America acts as a stage where different cultures not only coexist peacefully, but develop well.
Question: According to the passage, America is a country _ .
Options: (A) that welcomes people from all over the world (B) where citizens take more pride in their original culture (C) that is mostly settled by Europeans and Africans (D) where 81% of the population are immigrants
Asnwer: A
[EX A]: Yes

[EX Q]: Article: Wuhan, the capital city of Hubei province, has issued smog warnings for three days since Monday because of serious air pollution. The lingering smog forced construction sites to stop work and primary and middle schools to suspend outdoor activities. From Monday through Wednesday, the city's air quality index reading remained high, with the highest reading at 323, with PM2.5, or particulate matter smaller than 2.5 microns, as the main pollutant, according to the city's meteorological bureau. Any reading over 300 is considered "seriously polluted". The city experienced at least eight heavily polluted days in the first two weeks of December, with the air quality index reading reaching a high of 440, China News Service reported. Among those affected was a square dancing team in Jiang'an district, which had to stop daily practices after several members fell ill. Square dancing is a common open-air fitness practice across China, with most of the participants middle-aged or elderly women. Media reported the leader of one dancing team had to go to a hospital after she had an asthma attack on Dec 11. Identified only as Fang, 65, the dance team leader said she decided to suspend the practices after she learned her illness was caused by smog, and after several other members also fell ill, the report said. The city plans to invest 28 billion yuan ($4.61 billion) in air pollution control by 2017. The plan says the city will boost the development of clean energy vehicles for public transportation and remove all of the current 140,000 heavy-polluting vehicles from Wuhan's roads by the end of 2016.
Question: What's the main idea of the passage?
Options: (A) Wuhan decided to remove most construction sites. (B) Wuhan issued smog warnings for three days because of smog. (C) The city is reportedly unfit for physical training. (D) Outdoor exercise can decrease the influence of smog.
Asnwer: B
[EX A]:
Yes