Problem: Please answer a question about the following article about Immunology:
In the mid-1950s, Frank Burnet, inspired by a suggestion made by Niels Jerne, formulated the clonal selection theory (CST) of immunity. On the basis of CST, Burnet developed a theory of how an immune response is triggered according to the self/nonself distinction: "self" constituents (constituents of the body) do not trigger destructive immune responses, while "nonself" entities (e.g., pathogens, an allograft) trigger a destructive immune response. The theory was later modified to reflect new discoveries regarding histocompatibility or the complex "two-signal" activation of T cells. The self/nonself theory of immunity and the self/nonself vocabulary have been criticized, but remain very influential.
In CST, what triggers a destructive immune response?
A: "nonself" entities (e.g., pathogens, an allograft)
Problem: Please answer a question about the following article about Paris:
Paris is a city of books and bookstores. In the 1970s, 80 percent of French-language publishing houses were found in Paris, almost all on the Left Bank in the 5th, 6th and 7th arrondissements. Since that time, because of high prices, some publishers have moved out to the less expensive areas. It is also a city of small bookstores; There are about 150 bookstores in the 5th arrondissement alone, plus another 250 book stalls along the Seine. Small Paris bookstores are protected against competition from discount booksellers by French law; books, even e-books, cannot be discounted more than five percent below their publisher's cover price.
How many bookstalls are located along the Seine?
A: 250
Problem: Please answer a question about the following article about Asphalt:
Asphalt/bitumen is similar to the organic matter in carbonaceous meteorites. However, detailed studies have shown these materials to be distinct. The vast Alberta bitumen resources are believed to have started out as living material from marine plants and animals, mainly algae, that died millions of years ago when an ancient ocean covered Alberta. They were covered by mud, buried deeply over the eons, and gently cooked into oil by geothermal heat at a temperature of 50 to 150 C (120 to 300 F). Due to pressure from the rising of the Rocky Mountains in southwestern Alberta, 80 to 55 million years ago, the oil was driven northeast hundreds of kilometres into underground sand deposits left behind by ancient river beds and ocean beaches, thus forming the oil sands.
What temperatures did the organic deposits need to form bitumen over the eons?
A: 50 to 150 C
Problem: Please answer a question about the following article about New York City:
Manhattan's skyline, with its many skyscrapers, is universally recognized, and the city has been home to several of the tallest buildings in the world. As of 2011, New York City had 5,937 high-rise buildings, of which 550 completed structures were at least 330 feet (100 m) high, both second in the world after Hong Kong, with over 50 completed skyscrapers taller than 656 feet (200 m). These include the Woolworth Building (1913), an early gothic revival skyscraper built with massively scaled gothic detailing.
NYC has the highest quantity of skyscrapers after which other world city?
A:
Hong Kong