Problem: Karl Popper:

The Quine-Duhem thesis argues that it's impossible to test a single hypothesis on its own, since each one comes as part of an environment of theories. Thus we can only say that the whole package of relevant theories has been collectively falsified, but cannot conclusively say which element of the package must be replaced. An example of this is given by the discovery of the planet Neptune: when the motion of Uranus was found not to match the predictions of Newton's laws, the theory "There are seven planets in the solar system" was rejected, and not Newton's laws themselves. Popper discussed this critique of naive falsificationism in Chapters 3 and 4 of The Logic of Scientific Discovery. For Popper, theories are accepted or rejected via a sort of selection process. Theories that say more about the way things appear are to be preferred over those that do not; the more generally applicable a theory is, the greater its value. Thus Newton's laws, with their wide general application, are to be preferred over the much more specific "the solar system has seven planets".[dubious discuss]

The planet Uranus' apparent failure to follow Newton's laws led to the discovery of which planet?
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A: Neptune

Problem: The majority of the world's airports are non-towered, with no air traffic control presence. Busy airports have air traffic control (ATC) system. All airports use a traffic pattern to assure smooth traffic flow between departing and arriving aircraft. There are a number of aids available to pilots, though not all airports are equipped with them. Many airports have lighting that help guide planes using the runways and taxiways at night or in rain, snow, or fog. In the U.S. and Canada, the vast majority of airports, large and small, will either have some form of automated airport weather station, a human observer or a combination of the two. Air safety is an important concern in the operation of an airport, and airports often have their own safety services.
What do all pilots use?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The discovery of gold in Victoria in mid 1851 led to the Victorian gold rush, and Melbourne, which served as the major port and provided most services for the region, experienced rapid growth. Within months, the city's population had increased by nearly three-quarters, from 25,000 to 40,000 inhabitants. Thereafter, growth was exponential and by 1865, Melbourne had overtaken Sydney as Australia's most populous city. Additionally, Melbourne along with the Victorian regional cities of Ballarat and Geelong became the wealthiest cities in the world during the Gold Rush era.
Melbourne experienced rapid growth after 1851 due to the discovery of what?
A: gold

Context and question: While most Hokkien morphemes have standard designated characters, they are not always etymological or phono-semantic. Similar-sounding, similar-meaning or rare characters are commonly borrowed or substituted to represent a particular morpheme. Examples include "beautiful" ( bi is the literary form), whose vernacular morpheme sui is represented by characters like (an obsolete character), (a vernacular reading of this character) and even (transliteration of the sound sui), or "tall" ( ko is the literary form), whose morpheme koan is . Common grammatical particles are not exempt; the negation particle m (not) is variously represented by , or , among others. In other cases, characters are invented to represent a particular morpheme (a common example is the character in, which represents the personal pronoun "they"). In addition, some characters have multiple and unrelated pronunciations, adapted to represent Hokkien words. For example, the Hokkien word bah ("meat") has been reduced to the character , which has etymologically unrelated colloquial and literary readings (hek and jiok, respectively). Another case is the word 'to eat,' chiah, which is often transcribed in Taiwanese newspapers and media as (a Mandarin transliteration, xia, to approximate the Hokkien term), even though its recommended character in dictionaries is .
What type of characters do most colloquial mophemes have?
Answer: unanswerable

Question: Ann Arbor has a council-manager form of government. The City Council has 11 voting members: the mayor and 10 city council members. The mayor and city council members serve two-year terms: the mayor is elected every even-numbered year, while half of the city council members are up for election annually (five in even-numbered and five in odd-numbered years). Two council members are elected from each of the city's five wards. The mayor is elected citywide. The mayor is the presiding officer of the City Council and has the power to appoint all Council committee members as well as board and commission members, with the approval of the City Council. The current mayor of Ann Arbor is Christopher Taylor, a Democrat who was elected as mayor in 2014. Day-to-day city operations are managed by a city administrator chosen by the city council.
Is there an answer to this question: Who was chosen mayor in the last odd numbered year?

Answer: unanswerable

In 1928, Laemmle, Sr. made his son, Carl, Jr. head of Universal Pictures as a 21st birthday present. Universal already had a reputation for nepotismat one time, 70 of Carl, Sr.'s relatives were supposedly on the payroll. Many of them were nephews, resulting in Carl, Sr. being known around the studios as "Uncle Carl." Ogden Nash famously quipped in rhyme, "Uncle Carl Laemmle/Has a very large faemmle." Among these relatives was future Academy Award winning director/producer William Wyler.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who become head of Universal Pictures in 1921?
Ah, so..
unanswerable