Problem: Mali:

In the late 14th century, the Songhai gradually gained independence from the Mali Empire and expanded, ultimately subsuming the entire eastern portion of the Mali Empire. The Songhai Empire's eventual collapse was largely the result of a Moroccan invasion in 1591, under the command of Judar Pasha. The fall of the Songhai Empire marked the end of the region's role as a trading crossroads. Following the establishment of sea routes by the European powers, the trans-Saharan trade routes lost significance.

What century did Songhai become independent from Mali?
---
A: 14th century

Problem: Queen's popularity was stimulated in North America when "Bohemian Rhapsody" was featured in the 1992 comedy film Wayne's World. Its inclusion helped the song reach number two on the Billboard Hot 100 for five weeks in 1992 (it remained in the Hot 100 for over 40 weeks), and won the band an MTV Award at the 1992 MTV Video Music Awards. The compilation album Classic Queen also reached number four on the Billboard 200, and is certified three times platinum in the US. Wayne's World footage was used to make a new music video for "Bohemian Rhapsody", with which the band and management were delighted.
What year did Queen get a boost in North American sales due to being featured in a movie?
---
Answer: 1992

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
After gaining the Master Sword, Link is cleansed of the magic that kept him in wolf form, obtaining the Shadow Crystal. Now able to use it to switch between both forms at will, Link is led by Midna to the Mirror of Twilight located deep within the Gerudo Desert, the only known gateway between the Twilight Realm and Hyrule. However, they discover that the mirror is broken. The Sages there explain that Zant tried to destroy it, but he was only able to shatter it into fragments; only the true ruler of the Twili can completely destroy the Mirror of Twilight. They also reveal that they used it a century ago to banish Ganondorf, the Gerudo leader who attempted to steal the Triforce, to the Twilight Realm when executing him failed. Assisted by an underground resistance group they meet in Castle Town, Link and Midna set out to retrieve the missing shards of the Mirror, defeating those they infected. Once the portal has been restored, Midna is revealed to be the true ruler of the Twilight Realm, usurped by Zant when he cursed her into her current form. Confronting Zant, Link and Midna learn that Zant's coup was made possible when he forged a pact with Ganondorf, who asked for Zant's assistance in conquering Hyrule. After Link defeats Zant, Midna recovers the Fused Shadows, but destroys Zant after learning that only Ganondorf's death can release her from her curse. Returning to Hyrule, Link and Midna find Ganondorf in Hyrule Castle, with a lifeless Zelda suspended above his head. Ganondorf fights Link by possessing Zelda's body and eventually by transforming into a beast, but Link defeats him and Midna is able to resurrect Zelda.
Whose body is used as a proxy by Link in order to fight Ganondorf?
A: unanswerable

Context and question: After 92 AD, the palace eunuchs increasingly involved themselves in court politics, engaging in violent power struggles between the various consort clans of the empresses and empress dowagers, causing the Han's ultimate downfall. Imperial authority was also seriously challenged by large Daoist religious societies which instigated the Yellow Turban Rebellion and the Five Pecks of Rice Rebellion. Following the death of Emperor Ling (r. 168189 AD), the palace eunuchs suffered wholesale massacre by military officers, allowing members of the aristocracy and military governors to become warlords and divide the empire. When Cao Pi, King of Wei, usurped the throne from Emperor Xian, the Han dynasty ceased to exist.
Who was the last Emperor of the Han dynasty?
Answer: Xian

Question: Voting results have been a consistent source of controversy. The mechanism of voting had also aroused considerable criticisms, most notably in season two when Ruben Studdard beat Clay Aiken in a close vote, and in season eight, when the massive increase in text votes (100 million more text votes than season 7) fueled the texting controversy. Concerns about power voting have been expressed from the very first season. Since 2004, votes also have been affected to a limited degree by online communities such as DialIdol, Vote for the Worst (closed in 2013), and Vote for the Girls (started 2010).
Is there an answer to this question: How many more text votes were there in season eight of American Idol over season seven?

Answer: 100 million

Problem: Military history of the United States:

The United States originally wished to remain neutral when World War I broke out in August 1914. However, it insisted on its right as a neutral party to immunity from German submarine attack, even though its ships carried food and raw materials to Britain. In 1917 the Germans resumed submarine attacks, knowing that it would lead to American entry. When the U.S declared war, the U.S. army was still small by European standards and mobilization would take a year. Meanwhile, the U.S. continued to provide supplies and money to Britain and France, and initiated the first peacetime draft. Industrial mobilization took longer than expected, so divisions were sent to Europe without equipment, relying instead on the British and French to supply them.

What year did the US enter World War II?
---
A:
unanswerable