Problem: YouTube:

In 2014 YouTube said that 300 hours of new videos were uploaded to the site every minute, three times more than one year earlier and that around three quarters of the material comes from outside the U.S. The site has 800 million unique users a month. It is estimated that in 2007 YouTube consumed as much bandwidth as the entire Internet in 2000. According to third-party web analytics providers, Alexa and SimilarWeb, YouTube is the third most visited website in the world, as of June 2015; SimilarWeb also lists YouTube as the top TV and video website globally, attracting more than 15 billion visitors per month.

What is ranked second on the world's list of most visited sites?
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A: unanswerable


Problem: Eritrea's ethnic groups each have their own styles of music and accompanying dances. Amongst the Tigrinya, the best known traditional musical genre is the guaila. Traditional instruments of Eritrean folk music include the stringed krar, kebero, begena, masenqo and the wata (a distant/rudimentary cousin of the violin). The most popular Eritrean artist is the Tigrinya singer Helen Meles, who is noted for her powerful voice and wide singing range. Other prominent local musicians include the Kunama singer Dehab Faytinga, Ruth Abraha, Bereket Mengisteab, Yemane Baria, and the late Abraham Afewerki.
What musical instrument does Ruth Abraha play?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Neolithic people were skilled farmers, manufacturing a range of tools necessary for the tending, harvesting and processing of crops (such as sickle blades and grinding stones) and food production (e.g. pottery, bone implements). They were also skilled manufacturers of a range of other types of stone tools and ornaments, including projectile points, beads, and statuettes. But what allowed forest clearance on a large scale was the polished stone axe above all other tools. Together with the adze, fashioning wood for shelter, structures and canoes for example, this enabled them to exploit their newly won farmland.
What type of occupation were manufacturers considered to be proficient at?
A: unanswerable


Context and question: Regular script has been attributed to Zhong Yao, of the Eastern Han to Cao Wei period (c. 151–230 AD), who has been called the "father of regular script". However, some scholars postulate that one person alone could not have developed a new script which was universally adopted, but could only have been a contributor to its gradual formation. The earliest surviving pieces written in regular script are copies of Yao's works, including at least one copied by Wang Xizhi. This new script, which is the dominant modern Chinese script, developed out of a neatly written form of early semi-cursive, with addition of the pause (頓/顿 dùn) technique to end horizontal strokes, plus heavy tails on strokes which are written to the downward-right diagonal. Thus, early regular script emerged from a neat, formal form of semi-cursive, which had itself emerged from neo-clerical (a simplified, convenient form of clerical script). It then matured further in the Eastern Jin dynasty in the hands of the "Sage of Calligraphy", Wang Xizhi, and his son Wang Xianzhi. It was not, however, in widespread use at that time, and most writers continued using neo-clerical, or a somewhat semi-cursive form of it, for daily writing, while the conservative bafen clerical script remained in use on some stelae, alongside some semi-cursive, but primarily neo-clerical.
What had been linked to Zhong Yao?
Answer: Regular script


Question: Furthermore, Apple had created too many similar models that confused potential buyers. At one point, its product lineup was subdivided into Classic, LC, II, Quadra, Performa, and Centris models, with essentially the same computer being sold under a number of different names. These models competed against Macintosh clones, hardware manufactured by third parties that ran Apple's System 7. This succeeded in increasing the Macintosh's market share somewhat, and provided cheaper hardware for consumers, but hurt Apple financially as existing Apple customers began to buy cheaper clones which cannibalized the sales of Apple's higher-margin Macintosh systems, yet Apple still shouldered the burden of developing the Mac OS platform.
Is there an answer to this question: What did Apple's creation of too many similar models do to potential buyers?

Answer: confused potential buyers


QUES: During the 1960s and 1970s, the city gained a reputation as an important center for liberal politics. Ann Arbor also became a locus for left-wing activism and served as a hub for the civil-rights movement and anti-Vietnam War movement, as well as the student movement. The first major meetings of the national left-wing campus group Students for a Democratic Society took place in Ann Arbor in 1960; in 1965, the city was home to the first U.S. teach-in against the Vietnam War. During the ensuing 15 years, many countercultural and New Left enterprises sprang up and developed large constituencies within the city. These influences washed into municipal politics during the early and mid-1970s when three members of the Human Rights Party (HRP) won city council seats on the strength of the student vote. During their time on the council, HRP representatives fought for measures including pioneering antidiscrimination ordinances, measures decriminalizing marijuana possession, and a rent-control ordinance; many of these remain in effect in modified form. Alongside these liberal and left-wing efforts, a small group of conservative institutions were born in Ann Arbor. These include Word of God (established in 1967), a charismatic inter-denominational movement; and the Thomas More Law Center (established in 1999), a religious-conservative advocacy group.

In 1956, Ann Arbor was home to the first U.S. teach-in against what war?
What is the answer?
ANS:
unanswerable