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.

Q: Question: Is Vitebsk the capital of a country? Passage:A.P. Rosengolts was born in Vitebsk on November 4, 1889. He was the son of a Jewish merchant. He joined the Bolshevik faction of the Russian Social-Democratic Workers' Party (RSDRP) in 1905, the year of the first, abortive Russian Revolution. He worked as an insurance agent and carried out work for the Bolshevik party in Vitebsk, Kiev, Ekaterinoslav and Moscow. Rosengolts played an active role in the Revolution of 1917. He was a member of the Executive Committee of the Moscow City Council, the Moscow Military-Revolutionary Committee and the All-Russian Military-Revolutionary Committee. He was a leading officer in the Red Army and, during the Russian Civil War, worked closely with L.D. Trotsky. After the Civil War, Rosengolts worked successively for the Commissariats of Transportation and Finance and the Directorate of the Red Army Air Force. He served as ambassador to Britain from 1925 to 1927 and oversaw Soviet espionage in Britain. He became a member of the Central Committee of the Communist Party of the Soviet Union in 1927 and held various high positions in the Communist Party and the Soviet government. In 1930 he was appointed People's Commissar of Foreign Trade. On June 14, 1937, Rosengolts was dismissed from this office and on October 7, 1937, he was arrested. He was one of the defendants of the third Moscow Trial, along with Nikolai Bukharin, Alexey Rykov and other prominent Soviet officials. The accused faced a long list of capital charges, including plotting to assassinate Lenin and Stalin, espionage and sabotage. Like most of his co-defendants, Rosengolts confessed. He was convicted, sentenced to death and shot on March 15, 1938 in Moscow. He was rehabilitated in 1988.


A: b
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Q: Question: When was the creator of Conan the Barbarian born? Passage:"The Ivory Goddess" is a short story by American writers L. Sprague de Camp and Lin Carter, featuring the fictional sword and sorcery hero Conan the Barbarian created by Robert E. Howard. According to Morgan Holmes, citing de Camp friend Loay Hall, Carter did none of the writing, and the story was written by de Camp in collaboration with his wife Catherine Crook de Camp. The story was first published by Bantam Books in the paperback anthology Conan the Swordsman in August 1978. Later paperback editions of the collection were issued by Ace Books (1987 and 1991). The first hardcover edition was published by Tor Books in 2002. The book has also been translated into Italian. It was later gathered together with Conan the Liberator and Conan and the Spider God into the omnibus collection Sagas of Conan (Tor Books, 2004). The story has been translated into Italian.


A: b
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Q: Question: Has the rapper who Martin collaborated with on the album Kingdom Come won a Grammy?  Passage:Martin's fascination with hip hop was shown in mid-2006 when he collaborated with rapper Jay-Z for the rapper's comeback album Kingdom Come after the two met earlier in the year. Martin put some chords together for a song known as "Beach Chair" and sent them to Jay-Z who enlisted the help of hip-hop producer Dr. Dre to mix it. Coldplay producer Rik Simpson conceived and performed the drum beats. The song was performed on 27 September 2006 by the two during Jay-Z's European tour at Royal Albert Hall. Martin has also worked on a solo collaboration with Kanye West, with whom he shared an impromptu jam session during a 2006 concert at Abbey Road Studios. He performed the chorus of "Homecoming", from Kanye West's album Graduation.


A:
b
****