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: How old was Littlewort when he won an Olympic gold medal? Passage:Crystal Palace started their second season in a new division, having gained promotion from the Southern League Division Two the previous season. There were a number of personnel changes this season, with Archie Grant and captain Ted Birnie moving to Chelsea and George Walker going to New Brompton. Palace's hat-trick hero in their FA Cup exploits of last season, Walter Watkins, also moved on to Northampton Town. In their places Palace brought in a number of new faces. Charles Ryan joined from Nunhead, Thomas Wills from Newcastle, Bill Forster from Sheffield United and Bill Ledger from Pryhope Villa. Wilf Innerd was made captain and played in all but one of the club's League and Cup matches. The club struggled to find their feet on the new division, and failed to score in 13 of their matches, finishing the season in 19th position, one place off the bottom. This was enough to ensure safety though, as for this season there was no relegation. Palace again called on a number of amateurs from the local area and beyond, including Henry Littlewort. Littlewort, who made his only appearance for the club this season, would go on to win a gold medal with the British Football team in the 1912 Olympics.

Example Output: b

Example Input: Question: Who managed the team just prior to the current manager? Passage:The 2019–20 season is Port Vale's 108th season of football in the English Football League, and third consecutive season in EFL League Two. It is the first full season under manager John Askey and new owners Carol and Kevin Shanahan. The season covers the period from 1 July 2019 through to 30 June 2020. Askey reshaped the squad by letting 14 players go and bringing in 14 new signings, though David Amoo was the only new player in the starting eleven for the opening game of the season. They lost just one league game in six matches in August, though this was a heavy 5–2 defeat at Grimsby Town, and they also exited the EFL Cup at the first round. September saw them in indifferent form, as they picked up just one league win, though Vale did secure their place in the knockout stages of the EFL Trophy. October saw more promise, as they picked up their first away win, though were held to disappointing draws at home to struggling teams. They went on to claim five wins in six games in the month of November, including a 1–0 victory at local rivals Crewe Alexandra and wins against Milton Keynes Dons and Cheltenham Town in the FA Cup.

Example Output: b

Example Input: Question: Which school had more students the year Mairson received his B.A. in Mathematics, Yale or Stanford? Passage:Mairson received a B.A. in Mathematics from Yale University in 1978 and a Ph.D. in Computer Science from Stanford University in 1984 under the supervision of Jeffrey Ullman. His Ph.D. thesis, The Program Complexity of Searching a Table, won the Machtey Award at the 1983 IEEE Symposium on Foundations of Computer Science (FOCS). Mairson was a Postdoctoral researcher at INRIA Rocqencourt from 1984 to 1985, at Stanford University in 1985, and at the University of Oxford in 1986. He held a Visiting Professor position from 1999 to 2001 at Boston University. From 2005 to 2007, Mairson has served as the Chair of the Faculty Senate at Brandeis. He is currently an Associate Editor of the journal Logical Methods in Computer Science and Information and Computation, and sits on the editorial board of Higher-Order and Symbolic Computation.

Example Output:
a