Problem: LaserDisc:

LaserDiscs were initially cheaper than videocassettes to manufacture, because they lacked the moving parts and plastic outer shell that are necessary for VHS tapes to work, and the duplication process was much simpler. A VHS cassette has at least 14 parts including the actual tape while LaserDisc has one part with five or six layers. A disc can be stamped out in a matter of seconds whereas duplicating videotape required a complex bulk tape duplication mechanism and was a time-consuming process. However, by the end of the 1980s, average disc-pressing prices were over $5.00 per two-sided disc, due to the large amount of plastic material and the costly glass-mastering process needed to make the metal stamper mechanisms. Due to the larger volume of demand, videocassettes quickly became much cheaper to duplicate, costing as little as $1.00 by the beginning of the 1990s.

How much did VHS cost to produce by the 1990s?
---
A: as little as $1.00

Problem: The English word scientist is relatively recentfirst coined by William Whewell in the 19th century. Previously, people investigating nature called themselves natural philosophers. While empirical investigations of the natural world have been described since classical antiquity (for example, by Thales, Aristotle, and others), and scientific methods have been employed since the Middle Ages (for example, by Ibn al-Haytham, and Roger Bacon), the dawn of modern science is often traced back to the early modern period and in particular to the scientific revolution that took place in 16th- and 17th-century Europe. Scientific methods are considered to be so fundamental to modern science that some consider earlier inquiries into nature to be pre-scientific. Traditionally, historians of science have defined science sufficiently broadly to include those inquiries.
Ibn al-Haytham and Roger Bacon were scientists in which time period?
---
Answer: the Middle Ages

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Mexico has a large number of department stores based in Mexico, of which the most traditional are El Palacio de Hierro (High end and luxury goods) and Liverpool (Upper-middle income), with its middle income sister store Fabricas de Francia. Sanborns owns over 100 middle income level stores throughout the country. Grupo Carso operates Sears Mexico and two high-end Saks 5th Avenue stores. Other large chains are Coppel and Elektra, which offer items for the bargain price seeker. Wal-Mart operates Suburbia for lower income shoppers, along with stores under the brand names of Wal-Mart, Bodega Aurrera, and Superama.
What Mexican department store typically caters to low-end goods?
A: unanswerable

Context and question: Baroque music is characterized by the use of complex tonal counterpoint and the use of a basso continuo, a continuous bass line. Music became more complex in comparison with the songs of earlier periods. The beginnings of the sonata form took shape in the canzona, as did a more formalized notion of theme and variations. The tonalities of major and minor as means for managing dissonance and chromaticism in music took full shape.
What form began to take shape during the Baroque era?
Answer: the sonata form

Question: However, memory performance can be enhanced when material is linked to the learning context, even when learning occurs under stress. A separate study by cognitive psychologists Schwabe and Wolf shows that when retention testing is done in a context similar to or congruent with the original learning task (i.e., in the same room), memory impairment and the detrimental effects of stress on learning can be attenuated. Seventy-two healthy female and male university students, randomly assigned to the SECPT stress test or to a control group, were asked to remember the locations of 15 pairs of picture cards a computerized version of the card game "Concentration" or "Memory". The room in which the experiment took place was infused with the scent of vanilla, as odour is a strong cue for memory. Retention testing took place the following day, either in the same room with the vanilla scent again present, or in a different room without the fragrance. The memory performance of subjects who experienced stress during the object-location task decreased significantly when they were tested in an unfamiliar room without the vanilla scent (an incongruent context); however, the memory performance of stressed subjects showed no impairment when they were tested in the original room with the vanilla scent (a congruent context). All participants in the experiment, both stressed and unstressed, performed faster when the learning and retrieval contexts were similar.
Is there an answer to this question: What did a study performed by Schwabe and wolf show?

Answer: memory impairment and the detrimental effects of stress on learning can be attenuated.

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
While the distribution of Somalis per country in Europe is hard to measure because the Somali community on the continent has grown so quickly in recent years, an official 2010 estimate reported 108,000 Somalis living in the United Kingdom. Somalis in Britain are largely concentrated in the cities of London, Sheffield, Bristol, Birmingham, Cardiff, Liverpool, Manchester, Leeds, and Leicester, with London alone accounting for roughly 78% of Britain's Somali population. There are also significant Somali communities in Sweden: 57,906 (2014); the Netherlands: 37,432 (2014); Norway: 38,413 (2015); Denmark: 18,645 (2014); and Finland: 16,721 (2014).
How many Somalis lived in Finland as of 2014?
A:
16,721