Problem: Insect:

Insects can be divided into two groups historically treated as subclasses: wingless insects, known as Apterygota, and winged insects, known as Pterygota. The Apterygota consist of the primitively wingless order of the silverfish (Thysanura). Archaeognatha make up the Monocondylia based on the shape of their mandibles, while Thysanura and Pterygota are grouped together as Dicondylia. The Thysanura themselves possibly are not monophyletic, with the family Lepidotrichidae being a sister group to the Dicondylia (Pterygota and the remaining Thysanura).

What group of insects are inclusive within the Monocondylia primarily due to the shape of their mandible?
---
A: Archaeognatha


Problem: During World War II, when Denmark was occupied by Nazi Germany, the United States briefly controlled Greenland for battlefields and protection. In 1946, the United States offered to buy Greenland from Denmark for $100 million ($1.2 billion today) but Denmark refused to sell it. Several politicians and others have in recent years argued that Greenland could hypothetically be in a better financial situation as a part of the United States; for instance mentioned by professor Gudmundur Alfredsson at University of Akureyri in 2014. One of the actual reasons behind US interest in Greenland could be the vast natural resources of the island. According to Wikileaks, the U.S. appears to be highly interested in investing in the resource base of the island and in tapping the vast expected hydrocarbons off the Greenlandic coast.
What is one reason the US would be interested in Greenland?
---
Answer: the vast expected hydrocarbons off the Greenlandic coast.


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".

 Japan: The event was held in Nagano, which hosted the 1998 Winter Olympics, on April 26. Japanese Buddhist temple Zenkō-ji, which was originally scheduled to be the starting point for the Olympic torch relay in Nagano, refused to host the torch and pulled out of the relay plans, amid speculation that monks there sympathized with anti-Chinese government protesters. as well as the risk of disruption by violent protests. Parts of Zenkō-ji temple's main building (Zenkō-ji Hondō), reconstructed in 1707 and one of the National Treasures of Japan, was then vandalized with spraypaint. A new starting point, previously the site of a municipal building and now a parking lot, was chosen by the city. An event the city had planned to hold at the Minami Nagano Sports Park following the torch relay was also canceled out of concern about disruptions caused by demonstrators protesting against China's recent crackdown in Tibet. Thousands of riot police were mobilized to protect the torch along its route. The show of force kept most protesters in check, but slogans shouted by pro-China or pro-Tibet demonstrators, Japanese nationalists, and human rights organizations flooded the air. Five men were arrested and four injured amidst scenes of mob violence. The torch route was packed with mostly peaceful demonstrators. The public was not allowed at the parking lot where the relay started. After the Zenkoji monks held a prayer ceremony for victims of the recent events in Tibet. More than 100 police officers ran with the torch and riot police lined the streets while three helicopters flew above. Only two Chinese guards were allowed to accompany the torch because of Japan's concern over their treatment of demonstrators at previous relays. A man with a Tibetan flag tried to stop the torch at the beginning of the relay but was dragged off by police. Some raw eggs were also thrown from the crowd.
When monks pulled out of the event, where was the new starting point for the relay?
A: a municipal building


Context and question: Plymouth is home to Plymouth Argyle F.C., who play in the fourth tier of English football league known as Football League Two. The team's home ground is called Home Park and is located in Central Park. It links itself with the group of English non-conformists that left Plymouth for the New World in 1620: its nickname is "The Pilgrims". The city also has four Non-League football clubs; Plymouth Parkway F.C. who play at Bolitho Park, Elburton Villa F.C. who play at Haye Road, Vospers Oak Villa F.C. who play at Weston Mill and Plymstock United F.C. who play at Deans Cross. All four clubs play in the South West Peninsula League.
What football league team is located in Plymouth?
Answer: Plymouth Argyle F.C.


Question: iPods have won several awards ranging from engineering excellence,[not in citation given] to most innovative audio product, to fourth best computer product of 2006. iPods often receive favorable reviews; scoring on looks, clean design, and ease of use. PC World says that iPod line has "altered the landscape for portable audio players". Several industries are modifying their products to work better with both the iPod line and the AAC audio format. Examples include CD copy-protection schemes, and mobile phones, such as phones from Sony Ericsson and Nokia, which play AAC files rather than WMA.
Is there an answer to this question: Which phone manufacturers adopted the AAC file format to become better iPod-compatible?

Answer: Sony Ericsson and Nokia


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
When Cowan Powers and his family recorded their old-time music from 1924-1926, his daughter Orpha Powers was one of the earliest known southern-music artists to record with the mandolin. By the 1930s, single mandolins were becoming more commonly used in southern string band music, most notably by brother duets such as the sedate Blue Sky Boys (Bill Bolick and Earl Bolick) and the more hard-driving Monroe Brothers (Bill Monroe and Charlie Monroe). However, the mandolin's modern popularity in country music can be directly traced to one man: Bill Monroe, the father of bluegrass music. After the Monroe Brothers broke up in 1939, Bill Monroe formed his own group, after a brief time called the Blue Grass Boys, and completed the transition of mandolin styles from a "parlor" sound typical of brother duets to the modern "bluegrass" style. He joined the Grand Ole Opry in 1939 and its powerful clear-channel broadcast signal on WSM-AM spread his style throughout the South, directly inspiring many musicians to take up the mandolin. Monroe famously played Gibson F-5 mandolin, signed and dated July 9, 1923, by Lloyd Loar, chief acoustic engineer at Gibson. The F-5 has since become the most imitated tonally and aesthetically by modern builders.
What type of mandolin was becoming popular by 1930's? 
A:
single mandolins