Problem: Antenna (radio):

On the other hand, classical (analog) television transmissions are usually horizontally polarized, because in urban areas buildings can reflect the electromagnetic waves and create ghost images due to multipath propagation. Using horizontal polarization, ghosting is reduced because the amount of reflection of electromagnetic waves in the p polarization (horizontal polarization off the side of a building) is generally less than s (vertical, in this case) polarization. Vertically polarized analog television has nevertheless been used in some rural areas. In digital terrestrial television such reflections are less problematic, due to robustness of binary transmissions and error correction.

What cause less problems in digital terrestrial television?
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A: Vertically polarized analog television


Problem: Artists such as Gary Numan, the Human League, Soft Cell, John Foxx and Visage helped pioneer a new synthpop style that drew more heavily from electronic and synthesizer music and benefited from the rise of MTV. Post-punk artists such as Scritti Politti's Green Gartside and Josef K's Paul Haig, previously engaged in avant-garde practices, turned away from these approaches and pursued mainstream styles and commercial success. These new developments, in which post-punk artists attempted to bring subversive ideas into the pop mainstream, began to be categorized under the marketing term new pop.
What did some post-punk artists reject their previous avant-garde practices to pursue?
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Answer: commercial success


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Berry Gordy, Jr. founded Motown Records which rose to prominence during the 1960s and early 1970s with acts such as Stevie Wonder, The Temptations, The Four Tops, Smokey Robinson & The Miracles, Diana Ross & The Supremes, the Jackson 5, Martha and the Vandellas, The Spinners, Gladys Knight & the Pips, The Marvelettes, The Elgins, The Monitors, The Velvelettes and Marvin Gaye. Artists were backed by in-house vocalists The Andantes and The Funk Brothers, the Motown house band that was featured in Paul Justman's 2002 documentary film Standing in the Shadows of Motown, based on Allan Slutsky's book of the same name.
Who founded Motown records?
A: Berry Gordy, Jr.


Context and question: To understand groups beyond the level of mere symbolic manipulations as above, more structural concepts have to be employed.c[›] There is a conceptual principle underlying all of the following notions: to take advantage of the structure offered by groups (which sets, being "structureless", do not have), constructions related to groups have to be compatible with the group operation. This compatibility manifests itself in the following notions in various ways. For example, groups can be related to each other via functions called group homomorphisms. By the mentioned principle, they are required to respect the group structures in a precise sense. The structure of groups can also be understood by breaking them into pieces called subgroups and quotient groups. The principle of "preserving structures"—a recurring topic in mathematics throughout—is an instance of working in a category, in this case the category of groups.
What has to be compatible with the group operation?
Answer: constructions related to groups


Question: However, if the debt rescheduling causes losses on loans held by European banks, it weakens the private banking system, which then puts pressure on the central bank to come to the aid of those banks. Private-sector bond holders are an integral part of the public and private banking system. Another possible response is for wealthy member countries to guarantee or purchase the debt of countries that have defaulted or are likely to default. This alternative requires that the tax revenues and credit of the wealthy member countries be used to refinance the previous borrowing of the weaker member countries, and is politically controversial.
Is there an answer to this question: What would cause the private banking system to strengthen?

Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Strasbourg's status as a free city was revoked by the French Revolution. Enragés, most notoriously Eulogius Schneider, ruled the city with an increasingly iron hand. During this time, many churches and monasteries were either destroyed or severely damaged. The cathedral lost hundreds of its statues (later replaced by copies in the 19th century) and in April 1794, there was talk of tearing its spire down, on the grounds that it was against the principle of equality. The tower was saved, however, when in May of the same year citizens of Strasbourg crowned it with a giant tin Phrygian cap. This artifact was later kept in the historical collections of the city until it was destroyed by the Germans in 1870 during the Franco-Prussian war.
In what year did Eulogius Schneider take over rule of Strasbourg?
A:
unanswerable