Problem: IPod:

Apple did not develop the iPod software entirely in-house, instead using PortalPlayer's reference platform based on two ARM cores. The platform had rudimentary software running on a commercial microkernel embedded operating system. PortalPlayer had previously been working on an IBM-branded MP3 player with Bluetooth headphones. Apple contracted another company, Pixo, to help design and implement the user interface under the direct supervision of Steve Jobs. As development progressed, Apple continued to refine the software's look and feel. Starting with the iPod Mini, the Chicago font was replaced with Espy Sans. Later iPods switched fonts again to Podium Sansa font similar to Apple's corporate font, Myriad. iPods with color displays then adopted some Mac OS X themes like Aqua progress bars, and brushed metal meant to evoke a combination lock. In 2007, Apple modified the iPod interface again with the introduction of the sixth-generation iPod Classic and third-generation iPod Nano by changing the font to Helvetica and, in most cases, splitting the screen in half by displaying the menus on the left and album artwork, photos, or videos on the right (whichever was appropriate for the selected item).

What was the name of the font used prior to the release of the iPod Mini?
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A: Chicago

Problem: The governing bodies in each country operate league systems in a domestic season, normally comprising several divisions, in which the teams gain points throughout the season depending on results. Teams are placed into tables, placing them in order according to points accrued. Most commonly, each team plays every other team in its league at home and away in each season, in a round-robin tournament. At the end of a season, the top team is declared the champion. The top few teams may be promoted to a higher division, and one or more of the teams finishing at the bottom are relegated to a lower division.
What is the name for the type of tournament teams play in regular season?
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Answer: round-robin

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The introduction of the guided missile resulted in a significant shift in anti-aircraft strategy. Although Germany had been desperate to introduce anti-aircraft missile systems, none became operational during World War II. Following several years of post-war development, however, these systems began to mature into viable weapons systems. The US started an upgrade of their defences using the Nike Ajax missile, and soon the larger anti-aircraft guns disappeared. The same thing occurred in the USSR after the introduction of their SA-2 Guideline systems.
The introduction of what caused the larger anti-aircraft guns to disappear in the USSR?
A: SA-2 Guideline systems

Context and question: The HDI has extended its geographical coverage: David Hastings, of the United Nations Economic and Social Commission for Asia and the Pacific, published a report geographically extending the HDI to 230+ economies, whereas the UNDP HDI for 2009 enumerates 182 economies and coverage for the 2010 HDI dropped to 169 countries.
How many countries were included in the 2008 HDI?
Answer: unanswerable

Question: In 1985, Madonna commented that the first song to ever make a strong impression on her was "These Boots Are Made for Walkin'" by Nancy Sinatra; she said it summed up her own "take-charge attitude". As a young woman, she attempted to broaden her taste in literature, art, and music, and during this time became interested in classical music. She noted that her favorite style was baroque, and loved Mozart and Chopin because she liked their "feminine quality". Madonna's major influences include Karen Carpenter, The Supremes and Led Zeppelin, as well as dancers Martha Graham and Rudolf Nureyev. She also grew up listening to David Bowie, whose show was the first rock concert she ever attended.
Is there an answer to this question: Who grew up listening to David Bowie?

Answer: Madonna

By the 12th century, Romanesque architecture (termed Norman architecture in England because of its association with the Norman invasion), was established throughout Europe and provided the basic architectural forms and units that were to remain in evolution throughout the Medieval period. The important categories of building: the cathedral church, the parish church, the monastery, the castle, the palace, the great hall, the gatehouse, the civic building, had been established in the Romanesque period.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): By the beginning of what century was the Romanesque style established all over Europe?
Ah, so..
the 12th century