Problem: Extract the answer to the question from the following context. Question: Which of the following is not a geographical feature: the Atlas Mountains, the Sahara, or the polar front? Context: The effects of local surface low pressure are extremely limited because upper-level subsidence still continues to block any form of air ascent. Also, to be protected against rain-bearing weather systems by the atmospheric circulation itself, the desert is made even drier by his geographical configuration and location. Indeed, the extreme aridity of the Sahara can't be only explained by the subtropical high pressure. The Atlas Mountains, found in Algeria, Morocco and Tunisia also help to enhance the aridity of the northern part of the desert. These major mountain ranges act as a barrier causing a strong rain shadow effect on the leeward side by dropping much of the humidity brought by atmospheric disturbances along the polar front which affects the surrounding Mediterranean climates.

A: polar front

Problem: Given the question: Extract the answer to the question from the following context. Question: How can one tell if a scientific hypothesis is properly structured? Context: Logically, no number of positive outcomes at the level of experimental testing can confirm a scientific theory, but a single counterexample is logically decisive: it shows the theory, from which the implication is derived, to be false. To say that a given statement (e.g., the statement of a law of some scientific theory) -- [call it "T"] -- is "falsifiable" does not mean that "T" is false. Rather, it means that, if "T" is false, then (in principle), "T" could be shown to be false, by observation or by experiment. Popper's account of the logical asymmetry between verification and falsifiability lies at the heart of his philosophy of science. It also inspired him to take falsifiability as his criterion of demarcation between what is, and is not, genuinely scientific: a theory should be considered scientific if, and only if, it is falsifiable. This led him to attack the claims of both psychoanalysis and contemporary Marxism to scientific status, on the basis that their theories are not falsifiable.
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The answer is:
a theory should be considered scientific if, and only if, it is falsifiable

input question: Extract the answer to the question from the following context. Question: What did Planck find? Context: Classical statistical mechanics requires the existence of h (but does not define its value). Eventually, following upon Planck's discovery, it was recognized that physical action cannot take on an arbitrary value. Instead, it must be some multiple of a very small quantity, the "quantum of action", now called the Planck constant. Classical physics cannot explain this fact. In many cases, such as for monochromatic light or for atoms, this quantum of action also implies that only certain energy levels are allowed, and values in between are forbidden.???
output answer: physical action cannot take on an arbitrary value

Extract the answer to the question from the following context. Question: What were the things they did to pass the time? Context: Public demand caused the government in October 1940 to build new deep shelters:189190 within the Underground to hold 80,000 people but were not completed until the period of heaviest bombing had passed. By the end of 1940 significant improvements had been made in the Underground and in many other large shelters. Authorities provided stoves and bathrooms and canteen trains provided food. Tickets were issued for bunks in large shelters to reduce the amount of time spent queuing. Committees quickly formed within shelters as informal governments, and organisations such as the British Red Cross and the Salvation Army worked to improve conditions. Entertainment included concerts, films, plays and books from local libraries.
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Answer: concerts, films, plays and books from local libraries

Q: Extract the answer to the question from the following context. Question: Bell's workshop was for? Context: After setting up his workshop, Bell continued experiments based on Helmholtz's work with electricity and sound. He also modified a melodeon (a type of pump organ) so that it could transmit its music electrically over a distance. Once the family was settled in, both Bell and his father made plans to establish a teaching practice and in 1871, he accompanied his father to Montreal, where Melville was offered a position to teach his System of Visible Speech.
A: experiments

[Q]: Extract the answer to the question from the following context. Question: When did the sequel V-Jump magazine announced on August stop airing? Context: On August 17, 2011, Shueisha's V-Jump magazine announced a sequel set one year later, a third arc of Xros Wars subtitled The Young Hunters Who Leapt Through Time, which aired from October 2, 2011 to March 25, 2012, following on from the previous arc. It focuses on a new protagonist, Tagiru Akashi and his partner Gumdramon who embark on a new journey with an older Mikey, Shoutmon, an older Ewan and the revived Damemon, along with other new comrades as they deal with a hidden dimension that lies between the Human World and the Digital World called DigiQuartz. The series finale reintroduces the heroes of the previous five seasons as they all come together and help the current heroes in the final battle due to the fact that the DigiQuartz is essentially a tear in Space and Time, allowing all of the Digimon universes to converge.
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[A]:
March 25, 2012