Problem: ASCII:

Unfortunately, requiring two characters to mark the end of a line introduces unnecessary complexity and questions as to how to interpret each character when encountered alone. To simplify matters plain text data streams, including files, on Multics used line feed (LF) alone as a line terminator. Unix and Unix-like systems, and Amiga systems, adopted this convention from Multics. The original Macintosh OS, Apple DOS, and ProDOS, on the other hand, used carriage return (CR) alone as a line terminator; however, since Apple replaced these operating systems with the Unix-based OS X operating system, they now use line feed (LF) as well.

What id Multics use to simplify plain text data?
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A: line feed (LF) alone as a line terminator


Problem: These areas contain some spectacular scenery as well, as evidenced by such national parks as Yosemite and Mount Rainier. West of the Cascades and Sierra Nevada is a series of valleys, such as the Central Valley in California and the Willamette Valley in Oregon. Along the coast is a series of low mountain ranges known as the Pacific Coast Ranges. Much of the Pacific Northwest coast is inhabited by some of the densest vegetation outside of the Tropics, and also the tallest trees in the world (the Redwoods).
What are the tallest trees in the world?
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Answer: Redwoods


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Radio St Helena, which started operations on Christmas Day 1967, provided a local radio service that had a range of about 100 km (62 mi) from the island, and also broadcast internationally on shortwave radio (11092.5 kHz) on one day a year. The station presented news, features and music in collaboration with its sister newspaper, the St Helena Herald. It closed on 25 December 2012 to make way for a new three-channel FM service, also funded by St. Helena Government and run by the South Atlantic Media Services (formerly St. Helena Broadcasting (Guarantee) Corporation).
What newspaper did Radio Saint Helena collaborate with?
A: St Helena Herald


Context and question: In November 2008, 720p HD support was added. At the time of the 720p launch, the YouTube player was changed from a 4:3 aspect ratio to a widescreen 16:9. With this new feature, YouTube began a switchover to H.264/MPEG-4 AVC as its default video compression format. In November 2009, 1080p HD support was added. In July 2010, YouTube announced that it had launched a range of videos in 4K format, which allows a resolution of up to 4096×3072 pixels. In June 2015, support for 8K resolution was added, with the videos playing at 7680×4320 pixels.
When did YouTube begin a switchover to H.246/MPEG-4?
Answer: unanswerable


Question: Ibn Khaldun can be regarded as the earliest scientific systematic sociologist. The modern sociology, emerged in the early 19th century as the academic response to the modernization of the world. Among many early sociologists (e.g., Émile Durkheim), the aim of sociology was in structuralism, understanding the cohesion of social groups, and developing an "antidote" to social disintegration. Max Weber was concerned with the modernization of society through the concept of rationalization, which he believed would trap individuals in an "iron cage" of rational thought. Some sociologists, including Georg Simmel and W. E. B. Du Bois, utilized more microsociological, qualitative analyses. This microlevel approach played an important role in American sociology, with the theories of George Herbert Mead and his student Herbert Blumer resulting in the creation of the symbolic interactionism approach to sociology.
Is there an answer to this question: What is the main goal of sociology?

Answer: understanding the cohesion of social groups


Question: Davis and his cabinet left the city by train that night, as government officials burned documents and departing Confederate troops burned tobacco and other warehouses to deny their contents to the victors. On April 2, 1865, General Godfrey Weitzel, commander of the 25th corps of the United States Colored Troops, accepted the city's surrender from the mayor and group of leading citizens who remained. The Union troops eventually managed to stop the raging fires but about 25% of the city's buildings were destroyed-
Is there an answer to this question: By what means did Davis leave Richmond?

Answer:
train