Problem: Warsaw Pact:

For 36 years, NATO and the Warsaw Pact never directly waged war against each other in Europe; the United States and the Soviet Union and their respective allies implemented strategic policies aimed at the containment of each other in Europe, while working and fighting for influence within the wider Cold War on the international stage.

Who fought for influence during WWII?
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A: unanswerable

Problem: Solar energy:

Development of a solar-powered car has been an engineering goal since the 1980s. The World Solar Challenge is a biannual solar-powered car race, where teams from universities and enterprises compete over 3,021 kilometres (1,877 mi) across central Australia from Darwin to Adelaide. In 1987, when it was founded, the winner's average speed was 67 kilometres per hour (42 mph) and by 2007 the winner's average speed had improved to 90.87 kilometres per hour (56.46 mph). The North American Solar Challenge and the planned South African Solar Challenge are comparable competitions that reflect an international interest in the engineering and development of solar powered vehicles.

What was the average speed of a winning solar powered car by 2007?
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A: 90.87 kilometres per hour (56.46 mph)

Problem: Diarrhea:

According to two researchers, Nesse and Williams, diarrhea may function as an evolved expulsion defense mechanism. As a result, if it is stopped, there might be a delay in recovery. They cite in support of this argument research published in 1973 that found that treating Shigella with the anti-diarrhea drug (Co-phenotrope, Lomotil) caused people to stay feverish twice as long as those not so treated. The researchers indeed themselves observed that: "Lomotil may be contraindicated in shigellosis. Diarrhea may represent a defense mechanism".

If diarrhea is stopped, would could happen?
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A: there might be a delay in recovery.

Problem: Translation:

Web-based human translation is generally favored by companies and individuals that wish to secure more accurate translations. In view of the frequent inaccuracy of machine translations, human translation remains the most reliable, most accurate form of translation available. With the recent emergence of translation crowdsourcing, translation-memory techniques, and internet applications, translation agencies have been able to provide on-demand human-translation services to businesses, individuals, and enterprises.

What reputation does machine translations lose?
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A:
unanswerable