This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

Ex Input:
Passage: In the latter part of the second revolution, Thomas Alva Edison developed many devices that greatly influenced life around the world and is often credited with the creation of the first industrial research laboratory. In 1882, Edison switched on the world's first large-scale electrical supply network that provided 110 volts direct current to fifty-nine customers in lower Manhattan. Also toward the end of the second industrial revolution, Nikola Tesla made many contributions in the field of electricity and magnetism in the late 19th and early 20th centuries. Question: How many customers were supplied by Thomas Edison's electrical supply network?

Ex Output:
fifty-nine


Ex Input:
Passage: The Treaty of Paris stood until 1871, when France was defeated by Prussia in the Franco-Prussian War of 1870–1871. While Prussia and several other German states united to form a powerful German Empire, the Emperor of the French, Napoleon III, was deposed to permit the formation of a Third French Republic. During his reign, Napoleon III, eager for the support of the United Kingdom, had opposed Russia over the Eastern Question. Russian interference in the Ottoman Empire, however, did not in any significant manner threaten the interests of France. Thus, France abandoned its opposition to Russia after the establishment of a republic. Encouraged by the decision of the French, and supported by the German minister Otto von Bismarck, Russia renounced the Black Sea clauses of the treaty agreed to in 1856. As the United Kingdom alone could not enforce the clauses, Russia once again established a fleet in the Black Sea. Question: Between what years did the  Franco-Prussian War take place?

Ex Output:
1870–1871


Ex Input:
Passage: Though it is the most played local derby in the history of La Liga, it is also the most unbalanced, with Barcelona overwhelmingly dominant. In the primera división league table, Espanyol has only managed to end above Barça on three occasions from 80 seasons (1928–2015) and the only all-Catalan Copa del Rey final was won by Barça in 1957. Espanyol has the consolation of achieving the largest margin win with a 6–0 in 1951, while Barcelona's biggest win was 5–0 on five occasions (in 1933, 1947, 1964, 1975 and 1992). Espanyol achieved a 2–1 win against Barça during the 2008–09 season, becoming the first team to defeat Barcelona at Camp Nou in their treble-winning season. Question: Which team has the largest margin win?

Ex Output:

Espanyol