Problem: Mandolin:

In his 1805 mandolin method, Anweisung die Mandoline von selbst zu erlernen nebst einigen Uebungsstucken von Bortolazzi, Bartolomeo Bortolazzi popularised the Cremonese mandolin, which had four single-strings and a fixed bridge, to which the strings were attached. Bortolazzi said in this book that the new wire strung mandolins were uncomfortable to play, when compared with the gut-string instruments. Also, he felt they had a "less pleasing...hard, zither-like tone" as compared to the gut string's "softer, full-singing tone." He favored the four single strings of the Cremonese instrument, which were tuned the same as the Neapolitan.

How many strings did the Cremonese Mandolin have?
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A: four single-strings


Problem: At the same time, British, French, and Soviet negotiators scheduled three-party talks on military matters to occur in Moscow in August 1939, aiming to define what the agreement would specify should be the reaction of the three powers to a German attack. The tripartite military talks, started in mid-August, hit a sticking point regarding the passage of Soviet troops through Poland if Germans attacked, and the parties waited as British and French officials overseas pressured Polish officials to agree to such terms. Polish officials refused to allow Soviet troops into Polish territory if Germany attacked; as Polish foreign minister Józef Beck pointed out, they feared that once the Red Army entered their territories, it might never leave.
In what city did the tripartite military talks occur during the month of August?
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Answer: Moscow


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Rainfall tends to be associated with Atlantic depressions or with convection. The Atlantic depressions are more vigorous in autumn and winter and most of the rain which falls in those seasons in the south-west is from this source. Average annual rainfall is around 980 millimetres (39 in). November to March have the highest mean wind speeds, with June to August having the lightest winds. The predominant wind direction is from the south-west.
Along with winter, in what season are Atlantic depressions most prevalent?
A: autumn


Context and question: Beyoncé has been described as a having a wide-ranging sex appeal, with music journalist Touré writing that since the release of Dangerously in Love, she has "become a crossover sex symbol". Offstage Beyoncé says that while she likes to dress sexily, her onstage dress "is absolutely for the stage." Due to her curves and the term's catchiness, in the 2000s, the media often used the term "Bootylicious" (a portmanteau of the words booty and delicious) to describe Beyoncé, the term popularized by Destiny's Child's single of the same name. In 2006, it was added to the Oxford English Dictionary.
Beyonce's sex appeal is characterized as what?
Answer: wide-ranging


Question: In early 12th-century al-Andalus, the Arabian philosopher, Ibn Tufail (Abubacer), wrote discussions on materialism in his philosophical novel, Hayy ibn Yaqdhan (Philosophus Autodidactus), while vaguely foreshadowing the idea of a historical materialism.
Is there an answer to this question: What is the name of the novel written by Ibn Tufail?

Answer: Hayy ibn Yaqdhan (Philosophus Autodidactus)


Question: The Devonian spanned roughly from 419 to 359 Ma. The period was a time of great tectonic activity, as Laurasia and Gondwana drew closer together. The continent Euramerica (or Laurussia) was created in the early Devonian by the collision of Laurentia and Baltica, which rotated into the natural dry zone along the Tropic of Capricorn. In these near-deserts, the Old Red Sandstone sedimentary beds formed, made red by the oxidized iron (hematite) characteristic of drought conditions. Near the equator Pangaea began to consolidate from the plates containing North America and Europe, further raising the northern Appalachian Mountains and forming the Caledonian Mountains in Great Britain and Scandinavia. The southern continents remained tied together in the supercontinent of Gondwana. The remainder of modern Eurasia lay in the Northern Hemisphere. Sea levels were high worldwide, and much of the land lay submerged under shallow seas. The deep, enormous Panthalassa (the "universal ocean") covered the rest of the planet. Other minor oceans were Paleo-Tethys, Proto-Tethys, Rheic Ocean and Ural Ocean (which was closed during the collision with Siberia and Baltica).
Is there an answer to this question: During what time period was the Devonian era?

Answer:
419 to 359 Ma.