Problem: In 1847, Hungarian physician Ignac Fulop Semmelweis dramatically reduced the occurrency of puerperal fever by simply requiring physicians to wash their hands before attending to women in childbirth. This discovery predated the germ theory of disease. However, Semmelweis' findings were not appreciated by his contemporaries and came into use only with discoveries by British surgeon Joseph Lister, who in 1865 proved the principles of antisepsis. Lister's work was based on the important findings by French biologist Louis Pasteur. Pasteur was able to link microorganisms with disease, revolutionizing medicine. He also devised one of the most important methods in preventive medicine, when in 1880 he produced a vaccine against rabies. Pasteur invented the process of pasteurization, to help prevent the spread of disease through milk and other foods.
Who did Joseph Lister base his work off of?
The answer is the following: Louis Pasteur

Problem: European art music is largely distinguished from many other non-European and popular musical forms by its system of staff notation, in use since about the 16th century. Western staff notation is used by composers to prescribe to the performer the pitches (e.g., melodies, basslines and/or chords), tempo, meter and rhythms for a piece of music. This leaves less room for practices such as improvisation and ad libitum ornamentation, which are frequently heard in non-European art music and in popular music styles such as jazz and blues. Another difference is that whereas most popular styles lend themselves to the song form, classical music has been noted for its development of highly sophisticated forms of instrumental music such as the concerto, symphony, sonata, and mixed vocal and instrumental styles such as opera which, since they are written down, can attain a high level of complexity.
What popular styles practice improvisation and ad libitum ornamentation?
The answer is the following: jazz and blues

Problem: The Christian population of the empire, owing to their higher educational levels, started to pull ahead of the Muslim majority, leading to much resentment on the part of the latter. In 1861, there were 571 primary and 94 secondary schools for Ottoman Christians with 140,000 pupils in total, a figure that vastly exceeded the number of Muslim children in school at the same time, who were further hindered by the amount of time spent learning Arabic and Islamic theology. In turn, the higher educational levels of the Christians allowed them to play a large role in the economy. In 1911, of the 654 wholesale companies in Istanbul, 528 were owned by ethnic Greeks. Of course, it would be a mistake to ignore the geopolitical dimensions of this dynamic. The preponderance of Christian merchants owed not to any innate business sense on their part, although plenty of European observers were keen on making this point. In fact, in many cases, Christians and also Jews were able to gain protection from European consuls and citizenship, meaning they were protected from Ottoman law and not subject to the same economic regulations as their Muslim comrades.
How many Christian pupils were in ottoman schools in 1861?
The answer is the following: 140,000

Problem: Pub names are used to identify and differentiate each pub. Modern names are sometimes a marketing ploy or attempt to create "brand awareness", frequently using a comic theme thought to be memorable, Slug and Lettuce for a pub chain being an example. Interesting origins are not confined to old or traditional names, however. Names and their origins can be broken up into a relatively small number of categories.
What is the purpose of a pub name?
The answer is the following:
to identify and differentiate each pub