Problem: ASCII:

Many more of the control codes have been given meanings quite different from their original ones. The "escape" character (ESC, code 27), for example, was intended originally to allow sending other control characters as literals instead of invoking their meaning. This is the same meaning of "escape" encountered in URL encodings, C language strings, and other systems where certain characters have a reserved meaning. Over time this meaning has been co-opted and has eventually been changed. In modern use, an ESC sent to the terminal usually indicates the start of a command sequence, usually in the form of a so-called "ANSI escape code" (or, more properly, a "Control Sequence Introducer") beginning with ESC followed by a "[" (left-bracket) character. An ESC sent from the terminal is most often used as an out-of-band character used to terminate an operation, as in the TECO and vi text editors. In graphical user interface (GUI) and windowing systems, ESC generally causes an application to abort its current operation or to exit (terminate) altogether.

What was the "escape" character meant to stop?
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A: unanswerable


Problem: At the very end of the 19th century, a new style, with a carved top and back construction inspired by violin family instruments began to supplant the European-style bowl-back instruments in the United States. This new style is credited to mandolins designed and built by Orville Gibson, a Kalamazoo, Michigan luthier who founded the "Gibson Mandolin-Guitar Manufacturing Co., Limited" in 1902. Gibson mandolins evolved into two basic styles: the Florentine or F-style, which has a decorative scroll near the neck, two points on the lower body and usually a scroll carved into the headstock; and the A-style, which is pear shaped, has no points and usually has a simpler headstock.
 Who founded the Gibson Mandolin-Guitar Manufacturing Co, Unlimited?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In the example above, the identity and the rotations constitute a subgroup R = {id, r1, r2, r3}, highlighted in red in the group table above: any two rotations composed are still a rotation, and a rotation can be undone by (i.e. is inverse to) the complementary rotations 270° for 90°, 180° for 180°, and 90° for 270° (note that rotation in the opposite direction is not defined). The subgroup test is a necessary and sufficient condition for a subset H of a group G to be a subgroup: it is sufficient to check that g−1h ∈ H for all elements g, h ∈ H. Knowing the subgroups is important in understanding the group as a whole.d[›]
Knowing the group as a whole is important for understanding what?
A: unanswerable


Context and question: These different explorations of 'identity' demonstrate how difficult a concept it is to pin down. Since identity is a virtual thing, it is impossible to define it empirically. Discussions of identity use the term with different meanings, from fundamental and abiding sameness, to fluidity, contingency, negotiated and so on. Brubaker and Cooper note a tendency in many scholars to confuse identity as a category of practice and as a category of analysis (Brubaker & Cooper 2000, p. 5). Indeed, many scholars demonstrate a tendency to follow their own preconceptions of identity, following more or less the frameworks listed above, rather than taking into account the mechanisms by which the concept is crystallised as reality. In this environment, some analysts, such as Brubaker and Cooper, have suggested doing away with the concept completely (Brubaker & Cooper 2000, p. 1). Others, by contrast, have sought to introduce alternative concepts in an attempt to capture the dynamic and fluid qualities of human social self-expression. Hall (1992, 1996), for example, suggests treating identity as a process, to take into account the reality of diverse and ever-changing social experience. Some scholars have introduced the idea of identification, whereby identity is perceived as made up of different components that are 'identified' and interpreted by individuals. The construction of an individual sense of self is achieved by personal choices regarding who and what to associate with. Such approaches are liberating in their recognition of the role of the individual in social interaction and the construction of identity.
Many scholars confuse identity as a category of practice and what other category?
Answer: category of analysis


Question: High school football teams frequently participate in controlled scrimmages with other teams during preseason practice, but exhibition games are rare because of league rules and concerns about finances, travel and player injuries, along with enrollments not being registered until the early part of August in most school districts under the traditional September–June academic term. A more common exhibition is the high school football all-star game, which brings together top players from a region. These games are typically played by graduating seniors during the summer or at the end of the season. Many of these games, which include the U.S. Army All-American Bowl and Under Armour All-America Game, are used as showcases for players to be seen by colleges.
Is there an answer to this question: What year of players are in high school football all-star games?

Answer: graduating seniors


Problem: CBC Television:

Until 1998, the network carried a variety of American programs in addition to its core Canadian programming, directly competing with private Canadian broadcasters such as CTV and Global. Since then, it has restricted itself to Canadian programs, a handful of British programs, and a few American movies and off-network repeats. Since this change, the CBC has sometimes struggled to maintain ratings comparable to those it achieved before 1995, although it has seen somewhat of a ratings resurgence in recent years. In the 2007-08 season, hit series such as Little Mosque on the Prairie and The Border helped the network achieve its strongest ratings performance in over half a decade.

For how long has the CBC maintained its lead over other broadcast networks?
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A:
unanswerable