Article: Technologies based upon the polymerase chain reaction (PCR) method will become nearly ubiquitous gold standards of diagnostics of the near future, for several reasons. First, the catalog of infectious agents has grown to the point that virtually all of the significant infectious agents of the human population have been identified. Second, an infectious agent must grow within the human body to cause disease; essentially it must amplify its own nucleic acids in order to cause a disease. This amplification of nucleic acid in infected tissue offers an opportunity to detect the infectious agent by using PCR. Third, the essential tools for directing PCR, primers, are derived from the genomes of infectious agents, and with time those genomes will be known, if they are not already.

Question: What has the catalog of infectious agents grown to the point of?
Ans: virtually all of the significant infectious agents of the human population have been identified


Article: In several nations, rulers welcomed leaders of the Enlightenment at court and asked them to help design laws and programs to reform the system, typically to build stronger national states. These rulers are called "enlightened despots" by historians. They included Frederick the Great of Prussia, Catherine the Great of Russia, Leopold II of Tuscany, and Joseph II of Austria. Joseph was over-enthusiastic, announcing so many reforms that had so little support that revolts broke out and his regime became a comedy of errors and nearly all his programs were reversed. Senior ministers Pombal in Portugal and Struensee in Denmark also governed according to Enlightenment ideals. In Poland, the model constitution of 1791 expressed Enlightenment ideals, but was in effect for only one year as the nation was partitioned among its neighbors. More enduring were the cultural achievements, which created a nationalist spirit in Poland.

Question: In what country was the model constitution of 1791 in effect for only one year?
Ans: Poland


Article: Educational attainment: In 2000, according to the U.S. Census, out of the nearly 800,000 people in the Bronx who were then at least 25 years old, 62.3% had graduated from high school and 14.6% held a bachelor's or higher college degree. These percentages were lower than those for New York's other boroughs, which ranged from 68.8% (Brooklyn) to 82.6% (Staten Island) for high school graduates over 24, and from 21.8% (Brooklyn) to 49.4% (Manhattan) for college graduates. (The respective state and national percentages were [NY] 79.1% & 27.4% and [US] 80.4% & 24.4%.)

Question: What percent of the Bronx population has a high school diploma, as of 2000?
Ans: 62.3%


Article: In the immediate aftermath of World War II, there occurred several armed incidents between Yugoslavia and the Western Allies. Following the war, Yugoslavia acquired the Italian territory of Istria as well as the cities of Zadar and Rijeka. Yugoslav leadership was looking to incorporate Trieste into the country as well, which was opposed by the Western Allies. This led to several armed incidents, notably attacks by Yugoslav fighter planes on US transport aircraft, causing bitter criticism from the west. From 1945 to 1948, at least four US aircraft were shot down.[better source needed] Stalin was opposed to these provocations, as he felt the USSR unready to face the West in open war so soon after the losses of World War II and at the time when US had operational nuclear weapons whereas USSR had yet to conduct its first test. In addition, Tito was openly supportive of the Communist side in the Greek Civil War, while Stalin kept his distance, having agreed with Churchill not to pursue Soviet interests there, although he did support the Greek communist struggle politically, as demonstrated in several assemblies of the UN Security Council. In 1948, motivated by the desire to create a strong independent economy, Tito modeled his economic development plan independently from Moscow, which resulted in a diplomatic escalation followed by a bitter exchange of letters in which Tito affirmed that

Question: In what year did Tito model his economic development plan independently from Moscow?
Ans:
1948