The problem: Answer a question about this article:
Some of the most renowned and highly ranked universities in the world are located in the Boston area. Four members of the Association of American Universities are in Greater Boston (more than any other metropolitan area): Harvard University, the Massachusetts Institute of Technology, Boston University, and Brandeis University. Hospitals, universities, and research institutions in Greater Boston received more than $1.77 billion in National Institutes of Health grants in 2013, more money than any other American metropolitan area. Greater Boston has more than 100 colleges and universities, with 250,000 students enrolled in Boston and Cambridge alone. Its largest private universities include Boston University (the city's fourth-largest employer) with its main campus along Commonwealth Avenue and a medical campus in the South End; Northeastern University in the Fenway area; Suffolk University near Beacon Hill, which includes law school and business school; and Boston College, which straddles the Boston (Brighton)–Newton border. Boston's only public university is the University of Massachusetts Boston, on Columbia Point in Dorchester. Roxbury Community College and Bunker Hill Community College are the city's two public community colleges. Altogether, Boston's colleges and universities employ over 42,600 people, accounting for nearly 7 percent of the city's workforce.
How many students are enrolled in boston and Cambridge?
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The answer: 250,000


The problem: Answer a question about this article:
The U.S. Navy, by contrast, relied on commerce raiding from the outset. However, the problem of Allied forces surrounded in the Philippines, during the early part of 1942, led to diversion of boats to "guerrilla submarine" missions. As well, basing in Australia placed boats under Japanese aerial threat while en route to patrol areas, reducing their effectiveness, and Nimitz relied on submarines for close surveillance of enemy bases. Furthermore, the standard-issue Mark 14 torpedo and its Mark VI exploder both proved defective, problems which were not corrected until September 1943. Worst of all, before the war, an uninformed US Customs officer had seized a copy of the Japanese merchant marine code (called the "maru code" in the USN), not knowing that the Office of Naval Intelligence (ONI) had broken it. The Japanese promptly changed it, and the new code was not broken again by OP-20G until 1943.
What was the "maru code"?
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The answer: Japanese merchant marine code


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The first real progress toward a modern understanding of nervous function, though, came from the investigations of Luigi Galvani, who discovered that a shock of static electricity applied to an exposed nerve of a dead frog could cause its leg to contract. Since that time, each major advance in understanding has followed more or less directly from the development of a new technique of investigation. Until the early years of the 20th century, the most important advances were derived from new methods for staining cells. Particularly critical was the invention of the Golgi stain, which (when correctly used) stains only a small fraction of neurons, but stains them in their entirety, including cell body, dendrites, and axon. Without such a stain, brain tissue under a microscope appears as an impenetrable tangle of protoplasmic fibers, in which it is impossible to determine any structure. In the hands of Camillo Golgi, and especially of the Spanish neuroanatomist Santiago Ramón y Cajal, the new stain revealed hundreds of distinct types of neurons, each with its own unique dendritic structure and pattern of connectivity.
The tool that was invented to stain only a small fractions of neurons was called what?
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The answer: the Golgi stain


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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.
How many colleges compete at the Division 1 level in North Carolina?
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The answer:
18