Input: Read this: C trigraphs were created to solve this problem for ANSI C, although their late introduction and inconsistent implementation in compilers limited their use. Many programmers kept their computers on US-ASCII, so plain-text in Swedish, German etc. (for example, in e-mail or Usenet) contained "{, }" and similar variants in the middle of words, something those programmers got used to. For example, a Swedish programmer mailing another programmer asking if they should go for lunch, could get "N{ jag har sm|rg}sar." as the answer, which should be "Nä jag har smörgåsar." meaning "No I've got sandwiches."
Question: What was happening to the C trigraphs that were sent from programmers?

Output: unanswerable


Input: Read this: Timber was the chief building material during the Han dynasty; it was used to build palace halls, multi-story residential towers and halls and single-story houses. Because wood decays rapidly, the only remaining evidence of Han wooden architecture is a collection of scattered ceramic roof tiles. The oldest surviving wooden halls in China date to the Tang dynasty (618–907 AD). Architectural historian Robert L. Thorp points out the scarcity of Han-era archaeological remains, and claims that often unreliable Han-era literary and artistic sources are used by historians for clues about lost Han architecture.
Question: What dynasty can the oldest wooden buildings in China be dated to?

Output: Tang


Input: Read this: Pan-Germanism's origins began in the early 19th century following the Napoleonic Wars. The wars launched a new movement that was born in France itself during the French Revolution. Nationalism during the 19th century threatened the old aristocratic regimes. Many ethnic groups of Central and Eastern Europe had been divided for centuries, ruled over by the old Monarchies of the Romanovs and the Habsburgs. Germans, for the most part, had been a loose and disunited people since the Reformation when the Holy Roman Empire was shattered into a patchwork of states. The new German nationalists, mostly young reformers such as Johann Tillmann of East Prussia, sought to unite all the German-speaking and ethnic-German (Volksdeutsche) people.
Question: What wars took place in the 1900's?

Output: unanswerable


Input: Read this: Miami has a tropical monsoon climate (Köppen climate classification Am) with hot and humid summers and short, warm winters, with a marked drier season in the winter. Its sea-level elevation, coastal location, position just above the Tropic of Cancer, and proximity to the Gulf Stream shapes its climate. With January averaging 67.2 °F (19.6 °C), winter features mild to warm temperatures; cool air usually settles after the passage of a cold front, which produces much of the little amount of rainfall during the season. Lows occasionally fall below 50 °F (10 °C), but very rarely below 35 °F (2 °C). Highs generally range between 70–77 °F (21–25 °C).
Question: In degrees Celsius, what temperature does Miami always see?

Output:
unanswerable