Problem: Eritrea:

Eritrea can be split into three ecoregions. To the east of the highlands are the hot, arid coastal plains stretching down to the southeast of the country. The cooler, more fertile highlands, reaching up to 3000m has a different habitat. Habitats here vary from the sub-tropical rainforest at Filfil Solomona to the precipitous cliffs and canyons of the southern highlands. The Afar Triangle or Danakil Depression of Eritrea is the probable location of a triple junction where three tectonic plates are pulling away from one another.The highest point of the country, Emba Soira, is located in the center of Eritrea, at 3,018 meters (9,902 ft) above sea level.

What is located in the Danakil Depression?
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A: unanswerable


Problem: Safari and Mobile Safari were likewise always included with OS X and iOS respectively, so, similarly, they were originally funded by sales of Apple computers and mobile devices, and formed part of the overall Apple experience to customers.
What browser was automatically included with OS X?
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Answer: Safari


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Beginning with the Paris Exposition of 1878, the instrument's popularity rebounded. The Exposition was one of many stops for a popular new performing group the Estudiantes Españoles (Spanish Students). They danced and played guitars, violins and the bandurria, which became confused with the mandolin. Along with the energy and awareness created by the day's hit sensation, a wave of Italian mandolinists travelled Europe in the 1880s and 1890s and in the United States by the mid-1880s, playing and teaching their instrument. The instrument's popularity continued to increase during the 1890s and mandolin popularity was at its height in "early years of the 20th century." Thousands were taking up the instrument as a pastime, and it became an instrument of society, taken up by young men and women. Mandolin orchestras were formed worldwide, incorporating not only the mandolin family of instruments, but also guitars, double basses and zithers.
When was it said that mandolin's popularity peaked? 
A: early years of the 20th century.


Context and question: Some Christian writers considered the possibility that pagan commentators may have mentioned this event, mistaking it for a solar eclipse - although this would have been impossible during the Passover, which takes place at the full moon. Christian traveller and historian Sextus Julius Africanus and Christian theologian Origen refer to Greek historian Phlegon, who lived in the 2nd century AD, as having written "with regard to the eclipse in the time of Tiberius Caesar, in whose reign Jesus appears to have been crucified, and the great earthquakes which then took place"
Which Greek historian wrote about these natural occurrences?
Answer: Greek historian Phlegon


Question: Like Maradona, Ronaldo only stayed a short time before he left for Internazionale. However, new heroes emerged, such as Luís Figo, Patrick Kluivert, Luis Enrique and Rivaldo, and the team won a Copa del Rey and La Liga double in 1998. In 1999, the club celebrated its centenari, winning the Primera División title, and Rivaldo became the fourth Barcelona player to be awarded European Footballer of the Year. Despite this domestic success, the failure to emulate Real Madrid in the Champions League led to van Gaal and Núñez resigning in 2000.
Is there an answer to this question: How long did Ronaldo remain with Barcelona?

Answer: short time


Problem: Tuvalu:

While some commentators have called for the relocation of Tuvalu's population to Australia, New Zealand or Kioa in Fiji, in 2006 Maatia Toafa (Prime Minister from 2004–2006) said his government did not regard rising sea levels as such a threat that the entire population would need to be evacuated. In 2013 Enele Sopoaga, the prime minister of Tuvalu, said that relocating Tuvaluans to avoid the impact of sea level rise "should never be an option because it is self defeating in itself. For Tuvalu I think we really need to mobilise public opinion in the Pacific as well as in the [rest of] world to really talk to their lawmakers to please have some sort of moral obligation and things like that to do the right thing."

When did Prime Minster Maatia Toafa make his comments about not evacuating Tuvalu? 
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A:
2006