Problem: Data compression:

The majority of video compression algorithms use lossy compression. Uncompressed video requires a very high data rate. Although lossless video compression codecs perform at a compression factor of 5-12, a typical MPEG-4 lossy compression video has a compression factor between 20 and 200. As in all lossy compression, there is a trade-off between video quality, cost of processing the compression and decompression, and system requirements. Highly compressed video may present visible or distracting artifacts.

What has a data rate between 5 and 12?
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A: unanswerable

Problem: Nick Fradiani won the season, defeating Clark Beckham. By winning, Fradiani became the first winner from the Northeast region. Fradiani released "Beautiful Life" as his coronation single while Beckham released "Champion". Jax, the third place finalist, also released a single called "Forcefield".
What song did Jax release after coming in third on American Idol?
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Answer: Forcefield

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Libya began to turn towards socialism. In March 1978, the government issued guidelines for housing redistribution, attempting to ensure the population that every adult Libyan owned his own home and that nobody was enslaved to paying their rent. Most families were banned from owning more than one house, while former rental properties were seized and sold to the tenants at a heavily subsidized price. In September, Gaddafi called for the People's Committees to eliminate the "bureaucracy of the public sector" and the "dictatorship of the private sector"; the People's Committees took control of several hundred companies, converting them into worker cooperatives run by elected representatives.
After People's Committees expropriated companies, what did they turn them into?
A: worker cooperatives

Context and question: After Napoleon imposed the Convention of Artlenburg (Convention of the Elbe) on July 5, 1803, about 30,000 French soldiers occupied Hanover. The Convention also required disbanding the army of Hanover. However, George III did not recognize the Convention of the Elbe. This resulted in a great number of soldiers from Hanover eventually emigrating to Great Britain, where the King's German Legion was formed. It was the only German army to fight against France throughout the entire Napoleonic wars. The Legion later played an important role in the Battle of Waterloo in 1815. The Congress of Vienna in 1815 elevated the electorate to the Kingdom of Hanover. The capital town Hanover expanded to the western bank of the Leine and since then has grown considerably.
What convention did Napoleon suggest?
Answer: unanswerable

Question: Between 1872 and 1905, a series of protests took place in response to the sale of concessions to foreigners by Nasser od Din and Mozaffar od Din shahs of Qajar, and led to the Iranian Constitutional Revolution. The first Iranian Constitution and the first national parliament of Iran were founded in 1906, through the ongoing revolution. The Constitution included the official recognition of Iran's three religious minorities, namely Christians, Zoroastrians, and Jews, which has remained a basis in the legislation of Iran since then.
Is there an answer to this question: When did a series of protests over foreign concessions sales in Iran occur?

Answer: Between 1872 and 1905

QUES: Most types of capacitor include a dielectric spacer, which increases their capacitance. These dielectrics are most often insulators. However, low capacitance devices are available with a vacuum between their plates, which allows extremely high voltage operation and low losses. Variable capacitors with their plates open to the atmosphere were commonly used in radio tuning circuits. Later designs use polymer foil dielectric between the moving and stationary plates, with no significant air space between them.

What sort of capacitors have not traditionally been used in radio tuning circuits?
What is the answer?
ANS:
unanswerable