In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.

Ex Input:
Question: Which city is the largest  -  the city near junction K, or the city near junction A? Passage:Belgrade marshalling yard () or Makiš railway station (), or Makiš freight station, is a classification yard of the Belgrade railway junction and the largest railway station in Serbia. It is located in the neighbourhood of Makiš in Čukarica of Belgrade. The railroad continues to Ostružnica in one line via park A, in the other direction to Ostružnica via park B, in third direction to Resnik via junction B near Železnik and junction K of Belgrade railway junction near Petlovo Brdo, in fourth direction to Resnik via junction R in the tunnel below Vidikovac and junction A near Kneževac, in the fifth direction to Rakovica via park B and junction R, in the sixth direction to Rakovica via park A and junction T, in the seventh direction to Rakovica via park B and junction T per second line and the eight towards direction to Jajinci. Belgrade marshalling yard consists of 120 railway tracks.


Ex Output:
a


Ex Input:
Question: In what country is the Nikos Kazantzakis Stadium located? Passage:The «Nikos Kazantzakis» Stadium (), formerly known as Ergotelis Stadium and more commonly as Martinengo Stadium, is a football stadium located on the Martinengo bastion, part of the fortifications of Heraklion, on the island of Crete. It is named after Modern Greek literature giant Nikos Kazantzakis, whose grave is also located on the same bastion. It is part of the Ergotelis Athletic Centre, a sport facilities complex owned by Greek multi-sport club Ergotelis. Built in 1946, as Ergotelis Stadium (), it was the traditional home ground of Greek football club Ergotelis until 2004, when the club moved to the Pankritio Stadium, Heraklion's largest and most modern sports venue. The complex currently houses the Ergotelis Youth Academy, the largest youth sports academy on the island of Crete, and one of the largest in Greece, while the stadium itself is still used as the home ground of multiple Heraklion football clubs playing in the Heraklion Football Clubs Association amateur league system. It has a capacity of about 1,000 spectators, of which approximately 600 can be seated.


Ex Output:
b


Ex Input:
Question: Who destroyed the library of Khariton Chebotaryov during the Patriotic War of 1812? Passage:Khariton Chebotaryov was born in Vologda into a poor family. In 1755, he entered a gymnasium under the Moscow University, becoming a university student six years later. Upon his graduation from the university in 1764, Chebotaryov was soon hired by his alma mater as a translator from Latin and German. In 1767, he was transferred to the gymnasium as a teacher of history and geography. In 1773, Khariton Chebotaryov was entrusted with teaching Russian literature, simultaneously doing translations from Latin, German, and French with his students. In 1775, he was appointed deputy librarian (суб-библиотекарь) of the university library (only a professor could hold this post) and editor-in-chief of the Moskovskie Vedomosti for the next three years. In 1776, Khariton Chebotaryov became an extraordinary professor at the Russian Literature Department, simultaneously remaining a philosophy and world history teacher at the gymnasium. Upon the death of Professor Johann Gottfried Reichel, Chebotaryov delivered lectures on European history and Russian literature at the gymnasium. In 1778, Khariton Chebotaryov was made an ordinary professor and appointed librarian and censor at the university theater. In 1778-1783, he was a secretary of the academic council (университетская конференция), inspector of the university gymnasium and normal school. In 1782, Khariton Chebotaryov was promoted to the rank of a collegiate assessor and then court councilor (1786). At the behest of the Empress, he and Anton Barsov were engaged in copying out notes from Russian chronicles, located at synodal and patriarchal libraries and Moscow State Archive. These notes were later presented to Catherine the Great and then served as a source for her Notes on Russian History. In consideration of his efforts, Khariton Chebotaryov was rewarded with 500 silver rubles. After the transformation of the university charter, Chebotaryov was elected its rector (being in the rank of collegiate councilor) and awarded with the Order of Saint Anna (2nd Class). Upon his resignation from this post, Chebotaryov was appointed a permanent representative of the university board, remaining as such until his death. In 1809, Khariton Chebotaryov was promoted to the rank of state councilor. During the Patriotic War of 1812, he lost his precious library and personal archives, which would come to him as a shock and greatly undermine his health. As a result, Chebotaryov suffered a stroke and died on July 26, 1815. He was interred at the Vagankovo Cemetery in Moscow. 


Ex Output:

a