Problem: Black people:

In 1978 Aboriginal writer Kevin Gilbert received the National Book Council award for his book Living Black: Blacks Talk to Kevin Gilbert, a collection of Aboriginal people's stories, and in 1998 was awarded (but refused to accept) the Human Rights Award for Literature for Inside Black Australia, a poetry anthology and exhibition of Aboriginal photography. In contrast to previous definitions based solely on the degree of Aboriginal ancestry, in 1990 the Government changed the legal definition of Aboriginal to include any:

What was Living Black about?
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A: a collection of Aboriginal people's stories


Problem: Travel and tourism continue to be extremely important for Portugal, with visitor numbers forecast to increase significantly in the future.[citation needed] However, the increasing competition from Eastern European destinations continues to develop, with the presence of similar attractions that are often cheaper in countries such as Croatia. Consequently, it has been necessary for the country to focus upon its niche attractions, such as health, nature and rural tourism, to stay ahead of its competitors.
Portuguese tourist numbers are expected to do what in the future?
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Answer: increase


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
However, it is important to understand that despite the presence of reception statutes, much of contemporary American common law has diverged significantly from English common law. The reason is that although the courts of the various Commonwealth nations are often influenced by each other's rulings, American courts rarely follow post-Revolution Commonwealth rulings unless there is no American ruling on point, the facts and law at issue are nearly identical, and the reasoning is strongly persuasive.
How close is current American law to English law?
A: diverged significantly


Context and question: On 2 December 1942, as part of the Manhattan Project, another team led by Enrico Fermi was able to initiate the first artificial self-sustained nuclear chain reaction, Chicago Pile-1. Working in a lab below the stands of Stagg Field at the University of Chicago, the team created the conditions needed for such a reaction by piling together 400 short tons (360 metric tons) of graphite, 58 short tons (53 metric tons) of uranium oxide, and six short tons (5.5 metric tons) of uranium metal, a majority of which was supplied by Westinghouse Lamp Plant in a makeshift production process.
What was the last self-sustained nuclear chain reaction created by human beings called?
Answer: unanswerable


Question: In the 1980s, parents of mixed-race children began to organize and lobby for the addition of a more inclusive term of racial designation that would reflect the heritage of their children. When the U.S. government proposed the addition of the category of "bi-racial" or "multiracial" in 1988, the response from the public was mostly negative. Some African-American organizations, and African-American political leaders, such as Congresswoman Diane Watson and Congressman Augustus Hawkins, were particularly vocal in their rejection of the category, as they feared the loss of political and economic power if African Americans reduced their numbers by self-identification.
Is there an answer to this question: Why was Diane Watson in favor of the multiracial category?

Answer: unanswerable


Recent developments in LEDs permit them to be used in environmental and task lighting. LEDs have many advantages over incandescent light sources including lower energy consumption, longer lifetime, improved physical robustness, smaller size, and faster switching. Light-emitting diodes are now used in applications as diverse as aviation lighting, automotive headlamps, advertising, general lighting, traffic signals, camera flashes and lighted wallpaper. As of 2015[update], LEDs powerful enough for room lighting remain somewhat more expensive, and require more precise current and heat management, than compact fluorescent lamp sources of comparable output.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"):  Why aren't some people hesitant to use LED lighting?
Ah, so..
unanswerable