Problem: Wood:

The term heartwood derives solely from its position and not from any vital importance to the tree. This is evidenced by the fact that a tree can thrive with its heart completely decayed. Some species begin to form heartwood very early in life, so having only a thin layer of live sapwood, while in others the change comes slowly. Thin sapwood is characteristic of such species as chestnut, black locust, mulberry, osage-orange, and sassafras, while in maple, ash, hickory, hackberry, beech, and pine, thick sapwood is the rule. Others never form heartwood.

If a tree starts forming heartwood right away, will its sapwood layer be thin or thick?
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A: thin

Problem: The South American highlands were a center of early agriculture. Genetic testing of the wide variety of cultivars and wild species suggests that the potato has a single origin in the area of southern Peru, from a species in the Solanum brevicaule complex. Over 99% of all modern cultivated potatoes worldwide are descendants of a subspecies indigenous to south-central Chile, Solanum tuberosum ssp. tuberosum, where it was cultivated as long as 10,000 years ago. According to George Raudzens, "It is clear that in pre-Columbian times some groups struggled to survive and often suffered food shortages and famines, while others enjoyed a varied and substantial diet." The persistent drought around 850 AD coincided with the collapse of Classic Maya civilization, and the famine of One Rabbit (AD 1454) was a major catastrophe in Mexico.
What event in 850 AD coincided with the collapse of Mayan civilization?
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Answer: persistent drought

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
His film appearances after becoming Governor of California included a three-second cameo appearance in The Rundown, and the 2004 remake of Around the World in 80 Days. In 2005, he appeared as himself in the film The Kid & I. He voiced Baron von Steuben in the Liberty's Kids episode "Valley Forge". He had been rumored to be appearing in Terminator Salvation as the original T-800; he denied his involvement, but he ultimately did appear briefly via his image being inserted into the movie from stock footage of the first Terminator movie. Schwarzenegger appeared in Sylvester Stallone's The Expendables, where he made a cameo appearance.
Which 2005 movie featured Schwarzenegger as himself?
A: The Kid & I

Context and question: On 2 March 1979, the GPC announced the separation of government and revolution, the latter being represented by new Revolutionary Committees, who operated in tandem with the People's Committees in schools, universities, unions, the police force and the military. Dominated by revolutionary zealots, the Revolutionary Committees were led by Mohammad Maghgoub and a Central Coordinating Office, and met with Gaddafi annually. Publishing a weekly magazine The Green March (al-Zahf al-Akhdar), in October 1980 they took control of the press. Responsible for perpetuating revolutionary fervour, they performed ideological surveillance, later adopting a significant security role, making arrests and putting people on trial according to the "law of the revolution" (qanun al-thawra). With no legal code or safeguards, the administration of revolutionary justice was largely arbitrary and resulted in widespread abuses and the suppression of civil liberties: the "Green Terror."
Who was the leader of the Revolutionary Committees?
Answer: Mohammad Maghgoub

Question: The series is set three years after the events of Digimon Adventure 02, when Digimon who turn rogue by a mysterious infection appear to wreak havoc in the Human World. Tai and the other DigiDestined from the original series reunite with their partners and start fighting back with support from the Japanese government, while Davis, Yolei, Cody and Ken are defeated by a powerful enemy called Alphamon and disappear without a trace. Tai and the others also meet another DigiDestined called Meiko Mochizuki and her partner Meicoomon who become their friends, until Meicoomon turns hostile as well and flees after an encounter with Ken, who reappears suddenly, once again as the Digimon Emperor. The film series also feature several DigiDestined having their partners Digivolve up to the Mega level for the first time, a feat only Tai and Matt had achieved previously.
Is there an answer to this question: What happened for the first time to the DigiDestined in the film series?

Answer: the Mega level

Problem: Republic of the Congo:

Sassou Nguesso aligned the country with the Eastern Bloc and signed a twenty-year friendship pact with the Soviet Union. Over the years, Sassou had to rely more on political repression and less on patronage to maintain his dictatorship.

Which group of nations did Nguesso side the Congo with?
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A:
Eastern Bloc