Problem: YouTube:

In May 2014, prior to the launch of YouTube's subscription-based Music Key service, the independent music trade organization Worldwide Independent Network alleged that YouTube was using non-negotiable contracts with independent labels that were "undervalued" in comparison to other streaming services, and that YouTube would block all music content from labels who do not reach a deal to be included on the paid service. In a statement to the Financial Times in June 2014, Robert Kyncl confirmed that YouTube would block the content of labels who do not negotiate deals to be included in the paid service "to ensure that all content on the platform is governed by its new contractual terms." Stating that 90% of labels had reached deals, he went on to say that "while we wish that we had [a] 100% success rate, we understand that is not likely an achievable goal and therefore it is our responsibility to our users and the industry to launch the enhanced music experience." The Financial Times later reported that YouTube had reached an aggregate deal with Merlin Networka trade group representing over 20,000 independent labels, for their inclusion in the service. However, YouTube itself has not confirmed the deal.

Why did youtube want to ensure only contractees music was played?
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A: to launch the enhanced music experience

Problem: Russian language:

The modern literary language is usually considered to date from the time of Alexander Pushkin ( ) in the first third of the 19th century. Pushkin revolutionized Russian literature by rejecting archaic grammar and vocabulary (so-called " " "high style") in favor of grammar and vocabulary found in the spoken language of the time. Even modern readers of younger age may only experience slight difficulties understanding some words in Pushkin's texts, since relatively few words used by Pushkin have become archaic or changed meaning. In fact, many expressions used by Russian writers of the early 19th century, in particular Pushkin, Mikhail Lermontov ( ), Nikolai Gogol ( ), Aleksander Griboyedov ( ), became proverbs or sayings which can be frequently found even in modern Russian colloquial speech.

Who revolutionized modern Russian?
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A: Alexander Pushkin

Problem: Mexico City:

Mexico City remains the only Latin American city to host the Olympic Games, having held the Summer Olympics in 1968, winning bids against Buenos Aires, Lyon and Detroit. (This too will change thanks to Rio, 2016 Summer Games host). The city hosted the 1955 and 1975 Pan American Games, the last after Santiago and Sao Paulo withdrew. The ICF Flatwater Racing World Championships were hosted here in 1974 and 1994. Lucha libre is a Mexican style of wrestling, and is one of the more popular sports throughout the country. The main venues in the city are Arena Mexico and Arena Coliseo.

What year did Mexico City host the olympics?
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A: 1968

Problem: Han dynasty:

Women were expected to obey the will of their father, then their husband, and then their adult son in old age. However, it is known from contemporary sources that there were many deviations to this rule, especially in regard to mothers over their sons, and empresses who ordered around and openly humiliated their fathers and brothers. Women were exempt from the annual corvee labor duties, but often engaged in a range of income-earning occupations aside from their domestic chores of cooking and cleaning.

Which parental figures often avoided the common familial rules?
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A:
mothers