input: Make use of the article to answer the questions. Siberia is an extensive geographical region, and by the broadest definition is also known as North Asia. Siberia has historically been a part of Russia since the 17th century.

The territory of Siberia extends eastwards from the Ural Mountains to the watershed between the Pacific and Arctic drainage basins. The Yenisei River conditionally divides Siberia into two parts, Western and Eastern. Siberia stretches southwards from the Arctic Ocean to the hills of north-central Kazakhstan and to the national borders of Mongolia and China. With an area of , Siberia accounts for 77% of Russia's land area, but it is home to just 40 million people27% of the country's population. This is equivalent to an average population density of about (approximately equal to that of Australia), making Siberia one of the most sparsely populated regions on Earth. If it were a country by itself, it would still be the largest country in area, but in population it would be the world's 35th-largest and Asia's 14th-largest.

Worldwide, Siberia is well known primarily for its long harsh winters, with a January average of 25C (13F), as well as its extensive history of use by Russian and Soviet administrations as a place for prisons, labor camps, and exile. 1. How cold is it in Jan?
2. Is this a small area?
3. What is the eastern boundart?
4. Is it divided?
5. By what?
6. Into how many parts?
7. What are they?
8. What is the population?
9. What percentage of Russians is that?
10. Do many people live there?
numbered_answers: 1. average of 25C
2. No
3. Pacific and Arctic drainage basins
4. Yes
5. The Yenisei River
6. two
7. Western and Eastern.
8. 40 million
9. 27
10. 40 million

input: Federalism refers to the mixed or compound mode of government, combining a general government (the central or 'federal' government) with regional governments (provincial, state, Land, cantonal, territorial or other sub-unit governments) in a single political system. Its distinctive feature, exemplified in the founding example of modern federalism of the United States of America under the Constitution of 1789, is a relationship of parity between the two levels of government established. It can thus be defined as a form of government in which there is a division of powers between two levels of government of equal status.

Until recently, in the absence of prior agreement on a clear and precise definition, the concept was thought to mean (as a shorthand) 'a division of sovereignty between two levels of government'. New research, however, argues that this cannot be correct, as dividing sovereignty - when this concept is properly understood in its core meaning of the final and absolute source of political authority in a political community - is not possible. The descent of the United States into Civil War in the mid-nineteenth century, over disputes about unallocated competences concerning slavery and ultimately the right of secession, showed this. One or other level of government could be sovereign to decide such matters, but not both simultaneously. Therefore, it is now suggested that federalism is more appropriately conceived as 'a division of the powers flowing from sovereignty between two levels of government'. What differentiates the concept from other multi-level political forms is the characteristic of equality of standing between the two levels of government established. This clarified definition opens the way to identifying two distinct federal forms, where before only one was known, based upon whether sovereignty resides in the whole (in one people) or in the parts (in many peoples): the federal state (or federation) and the federal union of states (or federal union), respectively. Leading examples of the federal state include the United States, Germany, Canada, Switzerland, Australia and India. The leading example of the federal union of states is the European Union. 1. Is Federalism a straight-forward form of government?
2. What is it?
3. What type of government is a provincial one?
4. How many political systems does it combine regional governments into?
5. When was the Constitution done up?
6. How many levels of government have equal status?
7. What is divided between them?
8. Do those include psychic, alien, or supernatural ones?
9. What is the best example of a federal union?
10. What is united in it?
11. What's an example of an actual federal state?
12. Which else?
13. Any others?
14. What differentiates the concept from other multi-level political forms?
15. Who is it between?
16. When did the United States descend into Civil War?
17. Why?
18. Over what?
19. What was the civil war ultimately about? Return numbered answers in your output.

output: 1. No
2. A mixed or compound mode of government
3. Regional
4. A single one
5. 1789
6. Two
7. Powers
8. unknown
9. The European Union
10. States
11. India
12. Australia
13. United States, Germany, Canada, and Switzerland
14. characteristic of equality
15. Two levels of government
16. In the mid-nineteenth century
17. over disputes
18. about unallocated competences concerning slavery
19. the right of secession

Q: Compact Disc (CD) is a digital optical disc data storage format. The format was originally developed to store and play only sound recordings but was later adapted for storage of data (CD-ROM). Several other formats were further derived from these, including write-once audio and data storage (CD-R), rewritable media (CD-RW), Video Compact Disc (VCD), Super Video Compact Disc (SVCD), Photo CD, PictureCD, CD-i, and Enhanced Music CD. Audio CDs and audio CD players have been commercially available since October 1982.

In 2004, worldwide sales of audio CDs, CD-ROMs and CD-Rs reached about 30 billion discs. By 2007, 200 billion CDs had been sold worldwide. CDs are increasingly being replaced by other forms of digital storage and distribution, with the result that audio CD sales rates in the U.S. have dropped about 50% from their peak; however, they remain one of the primary distribution methods for the music industry. In 2014, revenues from digital music services matched those from physical format sales for the first time.

Answer the following questions:
1. What is a compact disc?
2. What is it's abbreviation?
3. Why was it invented?
4. Any other reasons?
5. Does that disc have a different name?
6. What?
7. Are there other formats?
8. How many?
9. Name two of these?
10. What is VCD?
11. How long have CDs been available to the public?
12. How many sales did it reach in 2004?
13. How many sold around the world by 2007?
14. Are they still as popular?
15. Why?
16. Have sales dropped?
17. By how much?
18. How were sales in 2014?
19. What does CD-RW mean?
20. Name another form?
A:
1. digital optical disc data storage format
2. CD
3. to store and play only sound recording
4. for storage of data
5. Yes
6. CD-ROM
7. Yes
8. 10
9. CD-R and CD-RW
10. Video Compact Disc
11. since October 1982.
12. about 30 billion discs
13. 200 billion
14. No
15. being replaced by other forms of digital storage and distribution,
16. Yes
17. about 50% from their peak;
18. revenues from digital music services matched those from physical format sales for the first time.
19. rewritable media
20. Super Video Compact Disc (SVCD)