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: How long had Jeffrey Ullman been teaching at Stanford the year Mairson got his B.A.? 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.


Ex Output:
b


Ex Input:
Question: Was Leon Friend still active as a teacher the year Gorelick graduated from Brooklyn College? Passage:Born Shirley Fishman in Brooklyn, New York, she attended Abraham Lincoln High School. Her teacher, Leon Friend, arranged for guest lectures by commercial and fine artists. Shirley Fishman had the opportunity to study with three of them: Chaim Gross, Moses Soyer, and Raphael Soyer. Gross influenced her early sculptural work, which features squat figures with thick limbs. While attending Brooklyn College, where she earned her B.A. in 1944, she met Leonard Gorelick (1922–2011), a fellow student. They married in 1944 and shared an enthusiasm for art and culture. Leonard Gorelick was an orthodontist and later a collector of cylinder seals. He combined his interests by investigating the authenticity of cylinder seals through the use of dental technology, especially electronmicroscopy. Shirley Gorelick earned an M.A. at Teachers College, Columbia University in 1947. That year, she studied for several weeks with Hans Hofmann in Provincetown. For a short time in the late 1950s, she was a student of the painter Betty Holliday and, in the early 1960s, learned printmaking in the Long Island studio of Ruth Leaf.


Ex Output:
a


Ex Input:
Question: How many years was Jean MacCurdy the Animation President of WB? Passage:Beginning in 1986, Warner Bros. moved into regular television animation production. Warners' television division was established by WB Animation President Jean MacCurdy, who brought in producer Tom Ruegger and much of his staff from Hanna-Barbera Productions' A Pup Named Scooby-Doo series (1988–1991). A studio for the television unit was set up in the office tower of the Imperial Bank Building adjacent to the Sherman Oaks Galleria northwest of Los Angeles. Darrell Van Citters, who used to work at Disney, would work on the newer Bugs Bunny shorts, before leaving to form Renegade Animation in 1992. The first Warner Bros. original animated TV series Tiny Toon Adventures (1990–1995) was produced in conjunction with Amblin Entertainment, and featured young cartoon characters based upon specific Looney Tunes stars, and was a success. Later Amblin/Warner Bros. television shows, including Animaniacs (1993–1998), its spin-off Pinky and the Brain (1995–1998), and Freakazoid! (1995–1997) followed in continuing the Looney Tunes tradition of cartoon humor.


Ex Output:

b