Problem: Alaska:

To finance state government operations, Alaska depends primarily on petroleum revenues and federal subsidies. This allows it to have the lowest individual tax burden in the United States. It is one of five states with no state sales tax, one of seven states that do not levy an individual income tax, and one of the two states that has neither. The Department of Revenue Tax Division reports regularly on the state's revenue sources. The Department also issues an annual summary of its operations, including new state laws that directly affect the tax division.

How many UN states do not collect an individual income tax?
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A: unanswerable


Problem: In 1987, as China began opening to Western capital investment, Spielberg shot the first American film in Shanghai since the 1930s, an adaptation of J. G. Ballard's autobiographical novel Empire of the Sun, starring John Malkovich and a young Christian Bale. The film garnered much praise from critics and was nominated for several Oscars, but did not yield substantial box office revenues. Reviewer Andrew Sarris called it the best film of the year and later included it among the best films of the decade. Spielberg was also a co-producer of the 1987 film *batteries not included.
What was Christian  Bale's first movie?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Scientists do not know the exact cause of sexual orientation, but they believe that it is caused by a complex interplay of genetic, hormonal, and environmental influences. They favor biologically-based theories, which point to genetic factors, the early uterine environment, both, or the inclusion of genetic and social factors. There is no substantive evidence which suggests parenting or early childhood experiences play a role when it comes to sexual orientation. Research over several decades has demonstrated that sexual orientation ranges along a continuum, from exclusive attraction to the opposite sex to exclusive attraction to the same sex.
What cannot be considered a factor in sexual orientation due to the lack of evidence?
A: There is no substantive evidence which suggests parenting or early childhood experiences play a role when it comes to sexual orientation.


Context and question: Karl Marx published the Communist Manifesto in February 1848, with little attention. However, a few days later the French Revolution of 1848 broke out, which replaced the monarchy of Louis Philippe with the Second French Republic. In June 1848, Paris workers, disenchanted with the new government, built barricades and raised red flags. The new government called in the French Army to put down the uprising, the first of many such confrontations between the army and the new worker's movements in Europe.
What did Karl Marx publish in 1884?
Answer: unanswerable


Question: Most copper is mined or extracted as copper sulfides from large open pit mines in porphyry copper deposits that contain 0.4 to 1.0% copper. Examples include Chuquicamata in Chile, Bingham Canyon Mine in Utah, United States and El Chino Mine in New Mexico, United States. According to the British Geological Survey, in 2005, Chile was the top mine producer of copper with at least one-third world share followed by the United States, Indonesia and Peru. Copper can also be recovered through the in-situ leach process. Several sites in the state of Arizona are considered prime candidates for this method. The amount of copper in use is increasing and the quantity available is barely sufficient to allow all countries to reach developed world levels of usage.
Is there an answer to this question: What is the name of the process being considered in Arizona that allows copper to be recovered?

Answer: in-situ leach process


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.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is the Planck constant formerly known as?
Ah, so..
quantum of action