Problem: Extract the answer to the question from the following context. Question: What caused Edison's Amberol cylinder to fail? Context: In 1901, 10-inch disc records were introduced, followed in 1903 by 12-inch records. These could play for more than three and four minutes respectively, while contemporary cylinders could only play for about two minutes. In an attempt to head off the disc advantage, Edison introduced the Amberol cylinder in 1909, with a maximum playing time of 4 minutes (at 160 rpm), which in turn were superseded by Blue Amberol Records, which had a playing surface made of celluloid, a plastic, which was far less fragile. Despite these improvements, during the 1910s discs decisively won this early format war, although Edison continued to produce new Blue Amberol cylinders for an ever-dwindling customer base until late in 1929. By 1919 the basic patents for the manufacture of lateral-cut disc records had expired, opening the field for countless companies to produce them. Analog disc records would dominate the home entertainment market until they were outsold by the digital compact disc in the late 1980s (which was in turn supplanted by digital audio recordings distributed via online music stores and Internet file sharing).

A: disc records

Problem: Extract the answer to the question from the following context. Question: How many ears does a person have normally? Context: The example Leibniz uses involves two proposed universes situated in absolute space. The only discernible difference between them is that the latter is positioned five feet to the left of the first. The example is only possible if such a thing as absolute space exists. Such a situation, however, is not possible, according to Leibniz, for if it were, a universe's position in absolute space would have no sufficient reason, as it might very well have been anywhere else. Therefore, it contradicts the principle of sufficient reason, and there could exist two distinct universes that were in all ways indiscernible, thus contradicting the identity of indiscernibles.

A: two

Problem: Extract the answer to the question from the following context. Question: Who would prefer the term African American, even though historical cultural base is not referenced in the argument? Context: In 1988, the civil rights leader Jesse Jackson urged Americans to use instead the term "African American" because it had a historical cultural base and was a construction similar to terms used by European descendants, such as German American, Italian American, etc. Since then, African American and black have often had parallel status. However, controversy continues over which if any of the two terms is more appropriate. Maulana Karenga argues that the term African-American is more appropriate because it accurately articulates their geographical and historical origin.[citation needed] Others have argued that "black" is a better term because "African" suggests foreignness, although Black Americans helped found the United States. Still others believe that the term black is inaccurate because African Americans have a variety of skin tones. Some surveys suggest that the majority of Black Americans have no preference for "African American" or "Black", although they have a slight preference for "black" in personal settings and "African American" in more formal settings.

A: Maulana Karenga

Problem: Extract the answer to the question from the following context. Question: When did the seperation occur? Context: Most of the Alsatian population is Roman Catholic, but, largely because of the region's German heritage, a significant Protestant community also exists: today, the EPCAAL (a Lutheran church) is France's second largest Protestant church, also forming an administrative union (UEPAL) with the much smaller Calvinist EPRAL. Unlike the rest of France, the Local law in Alsace-Moselle still provides for to the Napoleonic Concordat of 1801 and the organic articles, which provides public subsidies to the Roman Catholic, Lutheran, and Calvinist churches, as well as to Jewish synagogues; religion classes in one of these faiths is compulsory in public schools. This divergence in policy from the French majority is due to the region having been part of Imperial Germany when the 1905 law separating the French church and state was instituted (for a more comprehensive history, see: Alsace-Lorraine). Controversy erupts periodically on the appropriateness of this legal disposition, as well as on the exclusion of other religions from this arrangement.

A:
This divergence in policy from the French majority is due to the region having been part of Imperial Germany when the 1905 law separating the French church and state was instituted (for