The problem: Answer a question about this article:
ELPJ, a Japanese-based company, sells a laser turntable that uses a laser to read vinyl discs optically, without physical contact. The laser turntable eliminates record wear and the possibility of accidental scratches, which degrade the sound, but its expense limits use primarily to digital archiving of analog records, and the laser does not play back colored vinyl or picture discs. Various other laser-based turntables were tried during the 1990s, but while a laser reads the groove very accurately, since it does not touch the record, the dust that vinyl attracts due to static electric charge is not mechanically pushed out of the groove, worsening sound quality in casual use compared to conventional stylus playback.
What was the primary use of laser read discs?
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The answer: archiving of analog records


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Bilateral treaties are concluded between two states or entities. It is possible, however, for a bilateral treaty to have more than two parties; consider for instance the bilateral treaties between Switzerland and the European Union (EU) following the Swiss rejection of the European Economic Area agreement. Each of these treaties has seventeen parties. These however are still bilateral, not multilateral, treaties. The parties are divided into two groups, the Swiss ("on the one part") and the EU and its member states ("on the other part"). The treaty establishes rights and obligations between the Swiss and the EU and the member states severally—it does not establish any rights and obligations amongst the EU and its member states.[citation needed]
The bilateral treaties between Switzerland and the European Union followed the Swiss rejection of what?
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The answer: the European Economic Area agreement


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Armenians enjoy many different native and foreign foods. Arguably the favorite food is khorovats an Armenian-styled barbecue. Lavash is a very popular Armenian flat bread, and Armenian paklava is a popular dessert made from filo dough. Other famous Armenian foods include the kabob (a skewer of marinated roasted meat and vegetables), various dolmas (minced lamb, or beef meat and rice wrapped in grape leaves, cabbage leaves, or stuffed into hollowed vegetables), and pilaf, a rice dish. Also, ghapama, a rice-stuffed pumpkin dish, and many different salads are popular in Armenian culture. Fruits play a large part in the Armenian diet. Apricots (Prunus armeniaca, also known as Armenian Plum) have been grown in Armenia for centuries and have a reputation for having an especially good flavor. Peaches are popular as well, as are grapes, figs, pomegranates, and melons. Preserves are made from many fruits, including cornelian cherries, young walnuts, sea buckthorn, mulberries, sour cherries, and many others.
What is khorovats?
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The answer: an Armenian-styled barbecue


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Among the results of the Greek and Islamic influence on this period in European history was the replacement of Roman numerals with the decimal positional number system and the invention of algebra, which allowed more advanced mathematics. Astronomy advanced following the translation of Ptolemy's Almagest from Greek into Latin in the late 12th century. Medicine was also studied, especially in southern Italy, where Islamic medicine influenced the school at Salerno.
In what city was a medical school located that was notably influenced by Islamic medicine?
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The answer:
Salerno