The problem: Answer a question about this article:
In June 1963, Rev. Martin Luther King, Jr. gave a major speech in Detroit that foreshadowed his "I Have a Dream" speech in Washington, D.C. two months later. While the African-American Civil Rights Movement gained significant federal civil rights laws in 1964 and 1965, longstanding inequities resulted in confrontations between the police and inner city black youth wanting change. Longstanding tensions in Detroit culminated in the Twelfth Street riot in July 1967. Governor George W. Romney ordered the Michigan National Guard into Detroit, and President Johnson sent in U.S. Army troops. The result was 43 dead, 467 injured, over 7,200 arrests, and more than 2,000 buildings destroyed, mostly in black residential and business areas. Thousands of small businesses closed permanently or relocated to safer neighborhoods. The affected district lay in ruins for decades. It was the most costly riot in the United States.
How many people were killed in the Twelfth Street riots?
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The answer: 43

Problem: Please answer a question about the following article about History of science:
Ibn Khaldun can be regarded as the earliest scientific systematic sociologist. The modern sociology, emerged in the early 19th century as the academic response to the modernization of the world. Among many early sociologists (e.g., Emile Durkheim), the aim of sociology was in structuralism, understanding the cohesion of social groups, and developing an "antidote" to social disintegration. Max Weber was concerned with the modernization of society through the concept of rationalization, which he believed would trap individuals in an "iron cage" of rational thought. Some sociologists, including Georg Simmel and W. E. B. Du Bois, utilized more microsociological, qualitative analyses. This microlevel approach played an important role in American sociology, with the theories of George Herbert Mead and his student Herbert Blumer resulting in the creation of the symbolic interactionism approach to sociology.
What is the main goal of sociology?
A: understanding the cohesion of social groups

Question: Read this and answer the question

By the late 1990s, blue LEDs became widely available. They have an active region consisting of one or more InGaN quantum wells sandwiched between thicker layers of GaN, called cladding layers. By varying the relative In/Ga fraction in the InGaN quantum wells, the light emission can in theory be varied from violet to amber. Aluminium gallium nitride (AlGaN) of varying Al/Ga fraction can be used to manufacture the cladding and quantum well layers for ultraviolet LEDs, but these devices have not yet reached the level of efficiency and technological maturity of InGaN/GaN blue/green devices. If un-alloyed GaN is used in this case to form the active quantum well layers, the device will emit near-ultraviolet light with a peak wavelength centred around 365 nm. Green LEDs manufactured from the InGaN/GaN system are far more efficient and brighter than green LEDs produced with non-nitride material systems, but practical devices still exhibit efficiency too low for high-brightness applications.[citation needed]

How can light emission be varied from violet to amber?
Answer: By varying the relative In/Ga fraction in the InGaN quantum wells

Problem: College sports are also popular in North Carolina, with 18 schools competing at the Division I level. The Atlantic Coast Conference (ACC) is headquartered in Greensboro, and both the ACC Football Championship Game (Charlotte) and the ACC Men's Basketball Tournament (Greensboro) were most recently held in North Carolina. College basketball in particular is very popular, buoyed by the Tobacco Road rivalries between Duke, North Carolina, North Carolina State, and Wake Forest. The ACC Championship Game and The Belk Bowl are held annually in Charlotte's Bank of America Stadium, featuring teams from the ACC and the Southeastern Conference. Additionally, the state has hosted the NCAA Men's Basketball Final Four on two occasions, in Greensboro in 1974 and in Charlotte in 1994.
Where is the ACC headquarters?
The answer is the following: Greensboro

American political scientist Mark Cooper asserted that Nasser's charisma and his direct relationship with the Egyptian people "rendered intermediaries (organizations and individuals) unnecessary". He opined that Nasser's legacy was a "guarantee of instability" due to Nasser's reliance on personal power and the absence of strong political institutions under his rule. Historian Abd al-Azim Ramadan wrote that Nasser was an irrational and irresponsible leader, blaming his inclination to solitary decision-making for Egypt's losses during the Suez War, among other events. Miles Copeland, Jr. , once described as Nasser's closest Western adviser, said that the barriers between Nasser and the outside world have grown so thick that all but the information that attest to his infallibility, indispensability, and immortality has been filtered out.
What was needed under Nasser, the absence of which guaranteed instability?
strong political institutions

Here is a question about this article: In the English language, the capitalized form of God continues to represent a distinction between monotheistic "God" and "gods" in polytheism. The English word God and its counterparts in other languages are normally used for any and all conceptions and, in spite of significant differences between religions, the term remains an English translation common to all. The same holds for Hebrew El, but in Judaism, God is also given a proper name, the tetragrammaton YHWH, in origin possibly the name of an Edomite or Midianite deity, Yahweh. In many translations of the Bible, when the word LORD is in all capitals, it signifies that the word represents the tetragrammaton.
What is the answer to this question: What does it mean to read the word LORD in all capitals in the Bible?
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So...
signifies that the word represents the tetragrammaton