Problem: Nigeria:

The new head of state, Ibrahim Babangida, declared himself president and commander in chief of the armed forces and the ruling Supreme Military Council. He set 1990 as the official deadline for a return to democratic governance. Babangida's tenure was marked by a flurry of political activity: he instituted the International Monetary Fund's Structural Adjustment Program (SAP) to aid in the repayment of the country's crushing international debt, which most federal revenue was dedicated to servicing. He enrolled Nigeria in the Organisation of the Islamic Conference, which aggravated religious tensions in the country.

What controversial religious group did Nigeria join?
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A: Organisation of the Islamic Conference

Problem: In October 1810, six months after Fryderyk's birth, the family moved to Warsaw, where his father acquired a post teaching French at the Warsaw Lyceum, then housed in the Saxon Palace. Fryderyk lived with his family in the Palace grounds. The father played the flute and violin; the mother played the piano and gave lessons to boys in the boarding house that the Chopins kept. Chopin was of slight build, and even in early childhood was prone to illnesses.
What language did Chopin's father teach?
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Answer: French

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
At present, plans are being considered for building a new dual carriageway west of Strasbourg, which would reduce the buildup of traffic in that area by picking up north and southbound vehicles and getting rid of the buildup outside Strasbourg. The line plans to link up the interchange of Hrdt to the north of Strasbourg, with Innenheim in the southwest. The opening is envisaged at the end of 2011, with an average usage of 41,000 vehicles a day. Estimates of the French Works Commissioner however, raised some doubts over the interest of such a project, since it would pick up only about 10% of the traffic of the A35 at Strasbourg. Paradoxically, this reversed the situation of the 1950s. At that time, the French trunk road left of the Rhine not been built, so that traffic would cross into Germany to use the Karlsruhe-Basel Autobahn.
What is the name of the new carriageway?
A: unanswerable

Context and question: 1,500 V DC is used in the Netherlands, Japan, Republic Of Indonesia, Hong Kong (parts), Republic of Ireland, Australia (parts), India (around the Mumbai area alone, has been converted to 25 kV AC like the rest of India), France (also using 25 kV 50 Hz AC), New Zealand (Wellington) and the United States (Chicago area on the Metra Electric district and the South Shore Line interurban line). In Slovakia, there are two narrow-gauge lines in the High Tatras (one a cog railway). In Portugal, it is used in the Cascais Line and in Denmark on the suburban S-train system.
What railway line is DC being used in Portugal?
Answer: the Cascais Line

Question: Bermuda has developed a proud Rugby Union community. The Bermuda Rugby Union team won the 2011 Caribbean championships, defeating Guyana in the final. They previously beat The Bahamas and Mexico to take the crown. Rugby 7's is also played, with four rounds scheduled to take place in the 20112012 season. The Bermuda 7's team competed in the 2011 Las Vegas 7's, defeating the Mexican team. There are four clubs on the island: (1) Police (2) Mariners (3) Teachers (4) Renegades. There is a men's and women's competitioncurrent league champions are Police (Men) (winning the title for the first time since the 1990s) and Renegades (women's). Games are currently played at Warwick Academy. Bermuda u/19 team won the 2010 Caribbean Championships.
Is there an answer to this question: Who won the 2011 Caribbean championships?

Answer: The Bermuda Rugby Union team

Problem: Kanye West:

West's fifth album, My Beautiful Dark Twisted Fantasy, has been noted by writers for its maximalist aesthetic and its incorporation of elements from West's previous four albums. Entertainment Weekly's Simon Vozick-Levinson perceives that such elements "all recur at various points", namely "the luxurious soul of 2004's The College Dropout, the symphonic pomp of Late Registration, the gloss of 2007's Graduation, and the emotionally exhausted electro of 2008's 808s & Heartbreak". Sean Fennessey of The Village Voice writes that West "absorb[ed] the gifts of his handpicked collaborators, and occasionally elevat[ed] them" on previous studio albums, noting collaborators and elements as Jon Brion for Late Registration, DJ Toomp for Graduation, and Kid Cudi for 808s & Heartbreak.

What musician collaborated with Kanye West for his album Late Registration?
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A:
Jon Brion