Problem: Asthma:

The hygiene hypothesis attempts to explain the increased rates of asthma worldwide as a direct and unintended result of reduced exposure, during childhood, to non-pathogenic bacteria and viruses. It has been proposed that the reduced exposure to bacteria and viruses is due, in part, to increased cleanliness and decreased family size in modern societies. Exposure to bacterial endotoxin in early childhood may prevent the development of asthma, but exposure at an older age may provoke bronchoconstriction. Evidence supporting the hygiene hypothesis includes lower rates of asthma on farms and in households with pets.

What has caused the reduced exposure in childhood?
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A: increased cleanliness and decreased family size in modern societies


Problem: Since then, tourism in Nepal has thrived; it is the country's most important industry.[citation needed] Tourism is a major source of income for most of the people in the city, with several hundred thousand visitors annually. Hindu and Buddhist pilgrims from all over the world visit Kathmandu's religious sites such as Pashupatinath, Swayambhunath, Boudhanath and Budhanilkantha. From a mere 6,179 tourists in 1961/62, the number jumped to 491,504 in 1999/2000. Following the end of the Maoist insurgency, there was a significant rise of 509,956 tourist arrivals in 2009. Since then, tourism has improved as the country turned into a Democratic Republic. In economic terms, the foreign exchange registered 3.8% of the GDP in 1995/96 but then started declining[why?]. The high level of tourism is attributed to the natural grandeur of the Himalayas and the rich cultural heritage of the country.
What Nepalese mountains are claimed to attract tourists?
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Answer: Himalayas


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The city is drained by three rivers; the West, Mill, and Quinnipiac, named in order from west to east. The West River discharges into West Haven Harbor, while the Mill and Quinnipiac rivers discharge into New Haven Harbor. Both harbors are embayments of Long Island Sound. In addition, several smaller streams flow through the city's neighborhoods, including Wintergreen Brook, the Beaver Ponds Outlet, Wilmot Brook, Belden Brook, and Prospect Creek. Not all of these small streams have continuous flow year-round.
Which New Haven river releases into West Haven Harbor?
A: West River


Context and question: The City of Charleston is served by the Charleston International Airport. It is located in the City of North Charleston and is about 12 miles (20 km) northwest of downtown Charleston. It is the busiest passenger airport in South Carolina (IATA: CHS, ICAO: KCHS). The airport shares runways with the adjacent Charleston Air Force Base. Charleston Executive Airport is a smaller airport located in the John's Island section of the city of Charleston and is used by noncommercial aircraft. Both airports are owned and operated by the Charleston County Aviation Authority.
The Charleston International Airport is located in what city?
Answer: North Charleston


Question: On February 6, 2016, one day before her performance at the Super Bowl, Beyoncé released a new single exclusively on music streaming service Tidal called "Formation".
Is there an answer to this question: What day did Beyonce release her single, Formation?

Answer: February 6, 2016


Problem: ASCII:

From early in its development, ASCII was intended to be just one of several national variants of an international character code standard, ultimately published as ISO/IEC 646 (1972), which would share most characters in common but assign other locally useful characters to several code points reserved for "national use." However, the four years that elapsed between the publication of ASCII-1963 and ISO's first acceptance of an international recommendation during 1967 caused ASCII's choices for the national use characters to seem to be de facto standards for the world, causing confusion and incompatibility once other countries did begin to make their own assignments to these code points.

What was causing the confusion and incompatibility of the shared characters?
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A:
unanswerable