Article: Over time, the relative power of these five nations fluctuated, which by the dawn of the 20th century had served to create an entirely different balance of power. Some, such as the United Kingdom and Prussia (as the founder of the newly formed German state), experienced continued economic growth and political power. Others, such as Russia and Austria-Hungary, stagnated. At the same time, other states were emerging and expanding in power, largely through the process of industrialization. These countries seeking to attain great power status were: Italy after the Risorgimento, Japan after the Meiji Restoration, and the United States after its civil war. By the dawn of the 20th century, the balance of world power had changed substantially since the Congress of Vienna. The Eight-Nation Alliance was a belligerent alliance of eight nations against the Boxer Rebellion in China. It formed in 1900 and consisted of the five Congress powers plus Italy, Japan, and the United States, representing the great powers at the beginning of 20th century.

Question: Was the power of the 5 countries constant?
Ans: relative power of these five nations fluctuated


Here is a question about this article: After two forays into more serious dramatic films, Spielberg then directed the third Indiana Jones film, 1989's Indiana Jones and the Last Crusade. Once again teaming up with Lucas and Ford, Spielberg also cast actor Sean Connery in a supporting role as Indy's father. The film earned generally positive reviews and was another box office success, becoming the highest grossing film worldwide that year; its total box office receipts even topped those of Tim Burton's much-anticipated film Batman, which had been the bigger hit domestically. Also in 1989, he re-united with actor Richard Dreyfuss for the romantic comedy-drama Always, about a daredevil pilot who extinguishes forest fires. Spielberg's first romantic film, Always was only a moderate success and had mixed reviews.
What is the answer to this question: When did the 3rd Indiana Jones film come out?
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So... 1989


The problem: Answer a question about this article:
Agrobacterium tumefaciens, a soil rhizosphere bacterium, can attach to plant cells and infect them with a callus-inducing Ti plasmid by horizontal gene transfer, causing a callus infection called crown gall disease. Schell and Van Montagu (1977) hypothesised that the Ti plasmid could be a natural vector for introducing the Nif gene responsible for nitrogen fixation in the root nodules of legumes and other plant species. Today, genetic modification of the Ti plasmid is one of the main techniques for introduction of transgenes to plants and the creation of genetically modified crops.
How can scientists use bacteria in the study of plants?
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The answer: introducing the Nif gene


Problem: Please answer a question about the following article about Russian language:
The language possesses five vowels (or six, under the St. Petersburg Phonological School), which are written with different letters depending on whether or not the preceding consonant is palatalized. The consonants typically come in plain vs. palatalized pairs, which are traditionally called hard and soft. (The hard consonants are often velarized, especially before front vowels, as in Irish). The standard language, based on the Moscow dialect, possesses heavy stress and moderate variation in pitch. Stressed vowels are somewhat lengthened, while unstressed vowels tend to be reduced to near-close vowels or an unclear schwa. (See also: vowel reduction in Russian.)
What dialect is standard Russian based on?
A: Moscow dialect


Question: Read this and answer the question

Classification seeks to describe the diversity of bacterial species by naming and grouping organisms based on similarities. Bacteria can be classified on the basis of cell structure, cellular metabolism or on differences in cell components, such as DNA, fatty acids, pigments, antigens and quinones. While these schemes allowed the identification and classification of bacterial strains, it was unclear whether these differences represented variation between distinct species or between strains of the same species. This uncertainty was due to the lack of distinctive structures in most bacteria, as well as lateral gene transfer between unrelated species. Due to lateral gene transfer, some closely related bacteria can have very different morphologies and metabolisms. To overcome this uncertainty, modern bacterial classification emphasizes molecular systematics, using genetic techniques such as guanine cytosine ratio determination, genome-genome hybridization, as well as sequencing genes that have not undergone extensive lateral gene transfer, such as the rRNA gene. Classification of bacteria is determined by publication in the International Journal of Systematic Bacteriology, and Bergey's Manual of Systematic Bacteriology. The International Committee on Systematic Bacteriology (ICSB) maintains international rules for the naming of bacteria and taxonomic categories and for the ranking of them in the International Code of Nomenclature of Bacteria.

How can we classify the vast variety of bacterial species?
Answer: grouping organisms based on similarities


The war was successful for Great Britain, which gained the bulk of New France in North America, Spanish Florida, some individual Caribbean islands in the West Indies, the colony of Senegal on the West African coast, and superiority over the French trading outposts on the Indian subcontinent. The Native American tribes were excluded from the settlement; a subsequent conflict, known as Pontiac's War, was also unsuccessful in returning them to their pre-war status. In Europe, the war began disastrously for Prussia, but a combination of good luck and successful strategy saw King Frederick the Great manage to retrieve the Prussian position and retain the status quo ante bellum. Prussia emerged as a new European great power. The involvement of Portugal, Spain and Sweden did not return them to their former status as great powers. France was deprived of many of its colonies and had saddled itself with heavy war debts that its inefficient financial system could barely handle. Spain lost Florida but gained French Louisiana and regained control of its colonies, e.g., Cuba and the Philippines, which had been captured by the British during the war. France and other European powers will soon avenge their defeat in 1778 when American Revolutionary War broke out, with hopes of destroying Britain's dominance once and for all.
Who was the leader of Prussia?
King Frederick the Great