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: In what year did Ostashenko's country join the first world war? Passage:Ostashenko was born on 19 June 1896 in the village of Bolshaya Lyubshchina, Yanovichskoy volost, Vitebsky Uyezd, Vitebsk Governorate to a peasant family. He graduated from four grades at a gymnasium. During World War I, he was mobilized for military service on 7 August 1915, being sent to the 4th Company of the Reserve Battalion of the Petrograd Lifeguard Regiment in Petrograd. With the battalion, he fought with the Southwestern Front between July 1916 and February 1917, then returned to Petrograd before being demobilized on 13 March 1918. In July, he volunteered for the Red Army, serving in the Vitebsky Uyezd military commissariat as a clerk and instructor organizer. From May 1919 Ostashenko served as a Red Army man and political soldier a Communist mobilized to conduct political work in the army in the march battalion of the Vitebsk Reserve Regiment. From July he served as an assistant platoon commander in the 84th Rifle Regiment of the 10th Rifle Division, which fought against the Northwestern Army near Petrograd as part of the 15th Army of the Western Front. He entered the Smolensk Commanders' Infantry Courses in November and upon graduation in June 1920 became a platoon commander in the Rzhev-based 2nd Reserve Regiment. This assignment proved to be brief and a month later, Ostashenko became adjutant of the 4th Landing Detachment for armored trains with the Western Front. He fought with the detachment, which provided landing parties for armored trains, in the PolishSoviet War and was wounded twice.

Example Output: a

Example Input: Question: Was the publisher of the magazine Ottwalt wrote for a Russian? Passage:In 1933, Ottwalt and his wife, Waltraut, left Germany and went into exile in Denmark, then, by way of Czechoslovakia, ended up in the Soviet Union. Living in Moscow, Ottwalt wrote for the German exile magazine Internationale Literatur (published by Johannes R. Becher) and was an editor at Vegaar Bibliothek. He also wrote for the Deutsche Zentral Zeitung. In 1936, he and his wife were ensnared in the Stalinist purges and arrested by the Soviet secret police, the NKVD. He was charged with suspicion of espionage, sentenced to forced labor and deported to a gulag near Archangelsk. His wife was sentenced to forced labor in Kotlas. She was deported back to Germany in January 1941 and didn't learn about his death until January 1958, when the Soviet Red Cross informed her that her husband had died on 24 August 1943.

Example Output: b

Example Input: Question: What is the nationality of the artist who were commissioned by the Deveron Projects to create new walking work? Passage:In 2010, Deveron Projects commissioned Hamish Fulton to create a new walking work for Huntly. The resulting piece 21 Days in the Cairngorms (2010) featured two group slow-walks, as well as a group of walkers to see Fulton off on the first day of his twenty-day journey, and new and unusual experience for Fulton. This project inspired the development of the Walking Institute and a further focus on walking as an artistic medium. In 2012 Ethiopian artist Mihret Kebede developed Slow Marathon, an artistic project in response to her inability to walk from her hometown of Addis Ababa to Huntly. The project consisted of an accumulative marathon that included miles donated remotely by international participants, as well as two twenty-six mile walks in Huntly and Addis Ababa. Ultimately, over five-hundred individuals participated in the project and donated 14172.4 miles, a total of 540 marathons. The project has since become an annual event, created in conjunction with artists working with Devon Projects The 2013 Slow Marathon, Cabrach to Huntly, was held on John Muir Day and served as the official launch of the Institute. The 2014 event started at the Glenkindie on the edge of the Cairngorms National Park. Other Walking Institute projects have included: In the Footsteps of Nan Shepherd: a long distance walk looking by Simone Kenyon at issues, plights and pleasures of women walking in wilderness; Huntly Perambulator, a series of walks by Clare Qualmann looking at walking with prams; Hielan' Ways, a programme that included poetry (Alec Finlay), music (Paul Anderson) and art (Simone Kenyon, Gillian Russel). Hielan' Ways explored the old drover routes that cross north-east Scotland and culminated in a symposium with contributions from mountaineer Doug Scott , Turner Prize-winning artist Richard Long and the Cloud Appreciation Society. In 2015 Anthony Schrag completed The Lure of the Lost: A Contemporary Pilgrimage, a 2500km walk from Huntly to the Venice Biennale in Italy.

Example Output:
b