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.

Input: Consider Input: Question: How many years did the Great Depression last? Passage:Originally from New Brunswick, Harrison graduated from Nova Scotia Agricultural College in 1922, and, in 1924, from the Ontario Agricultural College with a B.Sc. in agriculture. He earned an MSc in plant pathology from Macdonald Campus of McGill University a year later. A doctoral degree he started at the University of Toronto in 1929 was abandoned due to the Great Depression. He established a herbarium of mycological specimens where he was employed for many years at the Kentville Research Station (now the Atlantic Food and Horticulture Research Centre); most of his collections are now housed at the Canadian National Mycological Herbarium. His early research concerned the fungal infestation of plants, such as that of Colletotrichum lindemuthianum on beans (Phaseolus). Working with John Frederick DeWitt Hockey, they made many contributions to the control and prevention of diseases of horticultural crops. They were among the first to use the sticky slide spore trap to estimate the densities of fungal spores.


Output: b


Input: Consider Input: Question: What is the faculty size of the school where adjunct professor of playwriting, acting and directing in the Department of Theatre and Dance? Passage:Harold Athol Lanigan Fugard OIS (born 11 June 1932) is a South African playwright, novelist, actor, and director who writes in South African English. He is best known for his political plays opposing the system of apartheid and for the 2005 Academy Award-winning film of his novel Tsotsi, directed by Gavin Hood. Fugard was an adjunct professor of playwriting, acting and directing in the Department of Theatre and Dance at the University of California, San Diego. For the academic year 2000–2001, he was the IU Class of 1963 Wells Scholar Professor at Indiana University, in Bloomington, Indiana. He is the recipient of many awards, honours, and honorary degrees, including the 2005 Order of Ikhamanga in Silver "for his excellent contribution and achievements in the theatre" from the government of South Africa. He is also an Honorary Fellow of the Royal Society of Literature.


Output: a


Input: Consider Input: Question: Who was the first to put forth the Voting Rights Act of 1965? Passage:In the United States, the Fifteenth Amendment to the United States Constitution, ratified in 1870 during the Reconstruction era, provided that "The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any State on account of race, color, or previous condition of servitude." This amendment aimed to guarantee the right to vote to African Americans, many of whom had been enslaved in the South prior to the end (1865) of the American Civil War and the 1864-1865 abolition of slavery. Despite the amendment, however, blacks were disfranchised in the former Confederate states after 1877; Southern officials ignored the amendment and blocked black citizens from voting through a variety of devices, including poll taxes, literacy tests, and grandfather clauses; violence and terrorism were used to intimidate some would-be voters. Southern blacks did not effectively receive the right to vote until the Voting Rights Act of 1965.



Output: b