Context and question: The roots of hard rock can be traced back to the 1950s, particularly electric blues, which laid the foundations for key elements such as a rough declamatory vocal style, heavy guitar riffs, string-bending blues-scale guitar solos, strong beat, thick riff-laden texture, and posturing performances. Electric blues guitarists began experimenting with hard rock elements such as driving rhythms, distorted guitar solos and power chords in the 1950s, evident in the work of Memphis blues guitarists such as Joe Hill Louis, Willie Johnson, and particularly Pat Hare, who captured a "grittier, nastier, more ferocious electric guitar sound" on records such as James Cotton's "Cotton Crop Blues" (1954). Other antecedents include Link Wray's instrumental "Rumble" in 1958, and the surf rock instrumentals of Dick Dale, such as "Let's Go Trippin'" (1961) and "Misirlou" (1962).
What is a key element that hard rock used to lay roots for electric blues music?
Answer: unanswerable
Context and question: Education in Switzerland is very diverse because the constitution of Switzerland delegates the authority for the school system to the cantons. There are both public and private schools, including many private international schools. The minimum age for primary school is about six years in all cantons, but most cantons provide a free "children's school" starting at four or five years old. Primary school continues until grade four, five or six, depending on the school. Traditionally, the first foreign language in school was always one of the other national languages, although recently (2000) English was introduced first in a few cantons.
What do most cantons provide for free when children are 4 or 5 years old?
Answer: children's school
Context and question: More than 20% of the world's population is Muslim. Current estimates conclude that the number of Muslims in the world is around 1,5 billion. Muslims are the majority in 49 countries, they speak hundreds of languages and come from diverse ethnic backgrounds. Major languages spoken by Muslims include Arabic, Urdu, Bengali, Punjabi, Malay, Javanese, Sundanese, Swahili, Hausa, Fula, Berber, Tuareg, Somali, Albanian, Bosnian, Russian, Turkish, Azeri, Kazakh, Uzbek, Tatar, Persian, Kurdish, Pashto, Balochi, Sindhi and Kashmiri, among many others.
How many countries are Muslims the minority in?
Answer:
unanswerable