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 profession did Fritz Haber work in the year Barschall received his Ph.D? Passage:Barschall was born as Heinrich Hermann Barschall in Berlin, Germany; his father was a patent attorney who had received a Ph.D. in chemistry after studying with Nobel Laureates Emil Fischer and Fritz Haber. After beginning study in several universities in Germany, he emigrated to the United States in 1937 during the early Holocaust period; though raised as a Lutheran, he had some Jewish ancestry. He received his Ph.D. from Princeton University in 1940 under the direction of Rudolf Ladenburg; he also worked closely with John A. Wheeler. After a suggestion by Niels Bohr, he carried out in only a few days with fellow graduate student Morton H. Kanner the first demonstration of fission by fast neutrons and thorium and uranium. His thesis was on the interaction of fast neutrons with helium. In a paper with John A. Wheeler he reported the discovery of spin-orbit coupling in neutron scattering.

Example Output: b

Example Input: Question: Which of the schools Martin received Bachelor degrees from was founded first? Passage:Born in Brooklyn, New York, Martin received a Bachelor of Arts degree from Manhattan College in 1957 and a Bachelor of Laws from Columbia Law School in 1961. He was a law clerk for Judge Leonard P. Moore of the United States Court of Appeals for the Second Circuit from 1961 to 1962. He was an Assistant United States Attorney of the Southern District of New York from 1962 to 1966. He was in private practice in Nyack, New York from 1966 to 1967. He was an Assistant to the Solicitor General of the United States from 1967 to 1969. He was in private practice in New York City from 1969 to 1980. He was the United States Attorney for the Southern District of New York from 1980 to 1983. He was in private practice in New York City from 1983 to 1990.

Example Output: b

Example Input: Question: Which was built first, the Hemus motorway or the Sofia Northern Bypass motorway? Passage:From Botevgrad to Sofia, E79 joins Hemus motorway, designated A2. At the Bulgarian capital Sofia you have to enter the Ring Road, until Sofia Northern Bypass motorway is built. Signage is available. From Sofia to south there are of motorways (A6 Lyulin motorway and A3 Struma motorway) to Dupnitsa-north interchange. The Bulgarian Traffic law allows speeds up to on motorways unless otherwise stated. The road is leading from Dolna Dikanya to south, right to the Kulata-Promachonas. All the way to the Border Check point the road is of the standard 2-lane tarmac except for the section from the Pernik Province-Blagoevgrad Province border and the southern entrance to the city of Blagoevgrad where the road is of highway type and is long. The section between Dupnitsa and Blagoevgrad, 37km long, has been upgraded to a motorway standard and opened to traffic 2015. Also the last of these sections - lot 4 from Sandanski-south to the Greek border of 13km opened to traffic in August 2015. The stretch between Blagoevgrad and Sandanski - lot 3 - passes through the Kresna Gorge and is planned to feature a tunnel, which will be the longest motorway tunnel in Eastern Europe, whose construction will begin in 2015 and will cost app. EUR 650 mln.

Example Output:
b