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: What year was the treaty that opened up the Korean Peninsula to Japanese trade signed? Passage:Un'yo was one of the ships dispatched to Kyushu in 1874 during the Saga Rebellion. In May 1875, she carried diplomats to Busan in Korea in an attempt by the Japanese government to open diplomatic relations with the Joseon dynasty government. After they were rebuffed in these negotiations, the Japanese government again dispatched Un'yo in September 1875 under the command of Inoue Yoshika to provoke a military response, in what was later termed the Ganghwa Island incident. This eventually led to the Treaty of Ganghwa, which opened the Korean Peninsula to Japanese trade. In 1876, Un'yo was assigned to assist in the suppression of the Hagi Rebellion, another uprising of disaffected former samurai. Un'yo was severely damaged when she ran aground off the coast of the Kii Peninsula, and was scrapped the following year.

Ex Output:
b

Ex Input:
Question: In what state did Beck receive a college degree in 1920? Passage:Beck was born in the village of Timmersdala, Sweden as one of seven children born to Carl Melcher and Anna Helena (Jonson) Back. His father was a member of the Swedish military and the owner and operator of a lime kiln. In March 1906, at the age of 11, Beck immigrated to the United States arriving in South Dakota in the middle of April 1906. He became a naturalized citizen of the United States of May 17, 1913. He received an Artium Baccalaureus degree from Morningside College in 1920. He received a Juris Doctor from the University of Chicago Law School in 1922. During World War I, he was a Second Lieutenant in the United States Army. He served in the Field Artillery at Camp Zachary Taylor, Kentucky, where it appears he was a junior officer of the 4th Company Convalescent Center.

Ex Output:
b

Ex Input:
Question: What year did Davidson's first novel win the Gold Dagger award? Passage:When the war ended, he returned to the Keystone Agency and travelled all over Europe as a freelance reporter. It was during one of these trips that he came up with the idea for his first thriller, The Night of Wenceslas (1960). The novel is set in Czechoslovakia during the Cold War, and tells the story of young Nicolas Whistler, a 24-year-old Londoner whose business trip to Prague goes horribly awry. The Night of Wenceslas was an instant success, inviting favourable comparisons with such luminaries as Eric Ambler. Davidson became one of the handful of living writers to have their first novel appear in a green Penguin jacket. The book won the Crime Writers' Association's Gold Dagger Award (the top prize for crime and spy fiction in Britain) as well as the Authors' Club First Novel Award. It was filmed as Hot Enough for June (1964), with Dirk Bogarde in the role of Whistler.

Ex Output:
b