Problem: Ann Arbor, Michigan:

The Ann Arbor News, owned by the Michigan-based Booth Newspapers chain, is the major daily newspaper serving Ann Arbor and the rest of Washtenaw County. The newspaper ended its 174-year print run in 2009, due to economic difficulties. It was replaced by AnnArbor.com, but returned to a limited print publication under its former name in 2013. Another Ann Arbor-based publication that has ceased production was the Ann Arbor Paper, a free monthly. Ann Arbor has been said to be the first significant city to lose its only daily paper. The Ann Arbor Chronicle, an online newspaper, covered local news, including meetings of the library board, county commission, and DDA until September 3, 2014.

What online newspaper stopped printing in 2009?
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A: unanswerable

Problem: Despite its relative lexical unity, the two dialectal blocks of Catalan (Eastern and Western) show some differences in word choices. Any lexical divergence within any of the two groups can be explained as an archaism. Also, usually Central Catalan acts as an innovative element.
How does central Catalan behave with the groups?
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Answer: as an innovative element

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
When granting assent by commission, the sovereign authorises three or more (normally five) lords who are Privy Counsellors to grant assent in his or her name. The Lords Commissioners, as the monarch's representatives are known, wear scarlet parliamentary robes and sit on a bench between the throne and the Woolsack. The Lords Reading Clerk reads the commission aloud; the senior commissioner then states, "My Lords, in obedience to Her Majesty's Commands, and by virtue of the Commission which has been now read, We do declare and notify to you, the Lords Spiritual and Temporal and Commons in Parliament assembled, that Her Majesty has given Her Royal Assent to the several Acts in the Commission mentioned."
Who wears blue parliamentary robes?
A: unanswerable

Context and question: In 1956, following the declaration of the Imre Nagy government of withdrawal of Hungary from the Warsaw Pact, Soviet troops entered the country and removed the government. Soviet forces crushed the nationwide revolt, leading to the death of an estimated 2,500 Hungarian citizens.
Which country withdrew from the Warsaw Pact in 1966?
Answer: unanswerable

Question: The boroughs are composed by hundreds of colonias or neighborhoods, which have no jurisdictional autonomy or representation. The Historic Center is the oldest part of the city (along with some other, formerly separate colonial towns such as Coyoacan and San Angel), some of the buildings dating back to the 16th century. Other well-known central neighborhoods include Condesa, known for its Art Deco architecture and its restaurant scene; Colonia Roma, a beaux arts neighborhood and artistic and culinary hot-spot, the Zona Rosa, formerly the center of nightlife and restaurants, now reborn as the center of the LGBT and Korean-Mexican communities; and Tepito and La Lagunilla, known for their local working-class foklore and large flea markets. Santa Maria la Ribera and San Rafael are the latest neighborhoods of magnificent Porfiriato architecture seeing the first signs of gentrification.
Is there an answer to this question: What is the oldest part of the city?

Answer: The Historic Center

Problem: Compact disc:

A CD is read by focusing a 780 nm wavelength (near infrared) semiconductor laser housed within the CD player, through the bottom of the polycarbonate layer. The change in height between pits and lands results in a difference in the way the light is reflected. By measuring the intensity change with a photodiode, the data can be read from the disc. In order to accommodate the spiral pattern of data, the semiconductor laser is placed on a swing arm within the disc tray of any CD player. This swing arm allows the laser to read information from the centre to the edge of a disc, without having to interrupt the spinning of the disc itself.

What does the width of a pit indicate?
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A:
unanswerable