Problem: Armenians:

From the 9th to 11th century, Armenian architecture underwent a revival under the patronage of the Bagratid Dynasty with a great deal of building done in the area of Lake Van, this included both traditional styles and new innovations. Ornately carved Armenian Khachkars were developed during this time. Many new cities and churches were built during this time, including a new capital at Lake Van and a new Cathedral on Akdamar Island to match. The Cathedral of Ani was also completed during this dynasty. It was during this time that the first major monasteries, such as Haghpat and Haritchavank were built. This period was ended by the Seljuk invasion.

Who invaded Armenia in the 11th century?
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A: Seljuk


Problem: Copyright infringement:

These types of intermediaries do not host or transmit infringing content, themselves, but may be regarded in some courts as encouraging, enabling or facilitating infringement by users. These intermediaries may include the author, publishers and marketers of peer-to-peer networking software, and the websites that allow users to download such software. In the case of the BitTorrent protocol, intermediaries may include the torrent tracker and any websites or search engines which facilitate access to torrent files. Torrent files don't contain copyrighted content, but they may make reference to files that do, and they may point to trackers which coordinate the sharing of those files. Some torrent indexing and search sites, such as The Pirate Bay, now encourage the use of magnet links, instead of direct links to torrent files, creating another layer of indirection; using such links, torrent files are obtained from other peers, rather than from a particular website.

What protocol do intermediaries not use that include a torrent tracker?
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A: unanswerable


Problem: Planck constant:

In the last years of the nineteenth century, Planck was investigating the problem of black-body radiation first posed by Kirchhoff some forty years earlier. It is well known that hot objects glow, and that hotter objects glow brighter than cooler ones. The electromagnetic field obeys laws of motion similarly to a mass on a spring, and can come to thermal equilibrium with hot atoms. The hot object in equilibrium with light absorbs just as much light as it emits. If the object is black, meaning it absorbs all the light that hits it, then its thermal light emission is maximized.

If an object is black, what is known about its thermal light emission?
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A: its thermal light emission is maximized.


Problem: Daylight saving time:

Older or stripped-down systems may support only the TZ values required by POSIX, which specify at most one start and end rule explicitly in the value. For example, TZ='EST5EDT,M3.2.0/02:00,M11.1.0/02:00' specifies time for the eastern United States starting in 2007. Such a TZ value must be changed whenever DST rules change, and the new value applies to all years, mishandling some older timestamps.

What years will a new TZ value apply to?
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A:
all years