Problem: Nigeria:

The United Nations estimates that the population in 2009 was at 154,729,000, distributed as 51.7% rural and 48.3% urban, and with a population density of 167.5 people per square kilometre. National census results in the past few decades have been disputed. The results of the most recent census were released in December 2006 and gave a population of 140,003,542. The only breakdown available was by gender: males numbered 71,709,859, females numbered 68,293,08. On June 2012, President Goodluck Jonathan said that Nigerians should limit their number of children.

How much of Nigeria's population in 2009 was rural?
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A: 51.7%

Problem: The Legend of Zelda: Twilight Princess is an action-adventure game focused on combat, exploration, and item collection. It uses the basic control scheme introduced in Ocarina of Time, including context-sensitive action buttons and L-targeting (Z-targeting on the Wii), a system that allows the player to keep Link's view focused on an enemy or important object while moving and attacking. Link can walk, run, and attack, and will automatically jump when running off of or reaching for a ledge.[c] Link uses a sword and shield in combat, complemented with secondary weapons and items, including a bow and arrows, a boomerang, bombs, and the Clawshot (similar to the Hookshot introduced earlier in the The Legend of Zelda series).[d] While L-targeting, projectile-based weapons can be fired at a target without the need for manual aiming.[c]
What is Clawshot's main weapon?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Although the Catholics and the Orthodox may honor and venerate Mary, they do not view her as divine, nor do they worship her. Roman Catholics view Mary as subordinate to Christ, but uniquely so, in that she is seen as above all other creatures. Similarly Theologian Sergei Bulgakov wrote that the Orthodox view Mary as "superior to all created beings" and "ceaselessly pray for her intercession". However, she is not considered a "substitute for the One Mediator" who is Christ. "Let Mary be in honor, but let worship be given to the Lord", he wrote. Similarly, Catholics do not worship Mary as a divine being, but rather "hyper-venerate" her. In Roman Catholic theology, the term hyperdulia is reserved for Marian veneration, latria for the worship of God, and dulia for the veneration of other saints and angels. The definition of the three level hierarchy of latria, hyperdulia and dulia goes back to the Second Council of Nicaea in 787.
When did the the Second Council of Nicaea end?
A: unanswerable

Context and question: In 2004 and 2007, the American Customer Satisfaction Index (ACSI) survey found that Comcast had the worst customer satisfaction rating of any company or government agency in the country, including the Internal Revenue Service. The ACSI indicates that almost half of all cable customers (regardless of company) have registered complaints, and that cable is the only industry to score below 60 in the ACSI. Comcast's Customer Service Rating by the ACSI surveys indicate that the company's customer service has not improved since the surveys began in 2001. Analysis of the surveys states that "Comcast is one of the lowest scoring companies in ACSI. As its customer satisfaction eroded by 7% over the past year, revenue increased by 12%." The ACSI analysis also addresses this contradiction, stating that "Such pricing power usually comes with some level of monopoly protection and most cable companies have little competition at the local level. This also means that a cable company can do well financially even though its customers are not particularly satisfied."
What has happened to the revenue of the Internal Revenue Service?
Answer: unanswerable

Question: Maintaining the household was the main duty of samurai women. This was especially crucial during early feudal Japan, when warrior husbands were often traveling abroad or engaged in clan battles. The wife, or okugatasama (meaning: one who remains in the home), was left to manage all household affairs, care for the children, and perhaps even defend the home forcibly. For this reason, many women of the samurai class were trained in wielding a polearm called a naginata or a special knife called the kaiken in an art called tantojutsu (lit. the skill of the knife), which they could use to protect their household, family, and honor if the need arose.
Is there an answer to this question: What did samurai wives' duties include when their husbands were away?

Answer: manage all household affairs, care for the children, and perhaps even defend the home forcibly

Problem: Videoconferencing:

One of the first demonstrations of the ability for telecommunications to help sign language users communicate with each other occurred when AT&T's videophone (trademarked as the "Picturephone") was introduced to the public at the 1964 New York World's Fair two deaf users were able to communicate freely with each other between the fair and another city. Various universities and other organizations, including British Telecom's Martlesham facility, have also conducted extensive research on signing via videotelephony. The use of sign language via videotelephony was hampered for many years due to the difficulty of its use over slow analogue copper phone lines, coupled with the high cost of better quality ISDN (data) phone lines. Those factors largely disappeared with the introduction of more efficient video codecs and the advent of lower cost high-speed ISDN data and IP (Internet) services in the 1990s.

In what decade were more efficient ways of using sign language via video-telephony developed?
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A:
1990s