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.

Example Input: Question: What was the first article that Khariton Chebotaryov wrote for the Moskovskie Vedomosti? 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. 

Example Output: a

Example Input: Question: At what age did Jared Harris join Allied? Passage:On February 6, 2015, Paramount Pictures and New Regency announced that Robert Zemeckis was to direct an untitled World War II romantic thriller, in which Brad Pitt would star. Steven Knight wrote the original script, in development by Graham King's GK Films, which now would be produced by ImageMovers' Zemeckis and Steve Starkey along with King. On June 8, 2015, Marion Cotillard was cast to play a spy along with Pitt, who fall in love during a mission to kill a German official. In August 2015, Knight said that the film would be based on a true story told to him at the age of 21, and also that the shooting would start in January 2016. On January 28, 2016, Jared Harris joined the film. On March 8, 2016, Lizzy Caplan was cast to play Pitt's sister. Executive producers on the film would be Knight, Jack Rapke, Patrick McCormick and Denis O'Sullivan. Alan Silvestri composed the music.

Example Output: b

Example Input: Question: Was Rey Escorpión older than Ultimo Guerrero the year Sin Salida was produced? Passage:Sin Salida (2015) (Spanish for "No Escape"/"No Exit") was a major professional wrestling event produced by the Mexican Lucha Libre-promotion Consejo Mundial de Lucha Libre (CMLL) that took place on Friday night July 17, 2015, in CMLL's main venue, Arena México, nicknamed "the cathedral of Lucha Libre" in lieu of CMLL's normally scheduled Super Viernes ("Super Friday") show. The main event was a best two-out-of-three falls Lucha de Apuestas, or bet match where both Rey Escorpión and Último Guerrero "bet" their hair on the outcome of the match and the loser was forced to have all his hair shaved off afterwards as per Lucha Libre traditions. The show also hosted two first-round matches of CMLL's 2015 En Busca de un Ídolo ("In Search of an Idol") tournament where Esfinge wrestled Canelo Casas and Delta was supposed to face Blue Panther Jr., but wrestled Hechicero instead. The show contained four additional matches. Although it was not announced ahead of time, the first six matches of the show were broadcast live on the Terra Networks' home page for free.

Example Output:
b