Problem: Ehrlich’s approach of systematically varying the chemical structure of synthetic compounds and measuring the effects of these changes on biological activity was pursued broadly by industrial scientists, including Bayer scientists Josef Klarer, Fritz Mietzsch, and Gerhard Domagk. This work, also based in the testing of compounds available from the German dye industry, led to the development of Prontosil, the first representative of the sulfonamide class of antibiotics. Compared to arsphenamine, the sulfonamides had a broader spectrum of activity and were far less toxic, rendering them useful for infections caused by pathogens such as streptococci. In 1939, Domagk received the Nobel Prize in Medicine for this discovery. Nonetheless, the dramatic decrease in deaths from infectious diseases that occurred prior to World War II was primarily the result of improved public health measures such as clean water and less crowded housing, and the impact of anti-infective drugs and vaccines was significant mainly after World War II.
Anti-infective drugs became more prominent after what war?
---
Answer: World War II


Problem: In 1930, Paul Dirac proposed a model of the vacuum as an infinite sea of particles possessing negative energy, called the Dirac sea. This theory helped refine the predictions of his earlier formulated Dirac equation, and successfully predicted the existence of the positron, confirmed two years later. Werner Heisenberg's uncertainty principle formulated in 1927, predict a fundamental limit within which instantaneous position and momentum, or energy and time can be measured. This has far reaching consequences on the "emptiness" of space between particles. In the late 20th century, so-called virtual particles that arise spontaneously from empty space were confirmed.
What did Heisenberg predict the existence of in 1930?
---
Answer: unanswerable


Problem: In India, the longest constitutional text in the history of the world has governed that country since 1950. Although the Constitution of India may have been intended to provide details that would limit the opportunity for judicial discretion, the more text there is in a constitution the greater opportunity the judiciary may have to exercise judicial review. According to Indian journalist Harish Khare, "The rule of law or rather the Constitution [is] in danger of being supplanted by the rule of judges."
In what year was India's constitution drafted?
---
Answer:
1950