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: What city the place in that Morrey was employed as a mathematician during World War II? Passage:Morrey graduated from Ohio State University with a B.A. in 1927 and a M.A. in 1928, and then studied at Harvard University under the supervision of George Birkhoff, obtaining a Ph.D. in 1931 with a thesis entitled Invariant functions of Conservative Surface Transformations. After being awarded his Ph.D, he was a National Research Council Fellow at Princeton, at the Rice Institute and finally at the University of Chicago. He became a professor of mathematics at UC Berkeley in 1933, hired by Griffith Conrad Evans, and was a faculty member until his retirement in 1973. In Berkeley, he was early given several administrative duties, for example being the Chairman of the Department of Mathematics during the period 19491954, and being the Acting Chairman, the Vice Chairman and the Director of the Institute of Pure and Applied Mathematics at various times. During the years 19371938 and 19541955 he was a member of the Institute for Advanced Studies: he was also Visiting Assistant Professor at Northwestern University, Visiting Professor at the University of Chicago and Miller Research Professor at Berkeley. During World War II he was employed as a mathematician at the U.S. Ballistic Research Laboratory in Maryland.

Output: b

Input: Consider 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.

Output: b

Input: Consider Input: Question: What country did the Light Show travel to after leaving Frankfurt, Vienna? Passage:In 2002, White met the cartoonist and painter Gary Panter, better known as the designer of The Pee-wee Herman Show. They began collaborating on light shows, beginning the third incarnation of the Joshua Light Show, which continues to perform. Beginning with a series of performances at the Anthology Film Archives in 2004, the Joshua Light Show performs at festivals, museums and venues such as the Skirball Center, Abrons Art Center, the Museum of Contemporary Art Detroit, the Hayden Planetarium, the Barbican Centre, UC Davis, and the San Francisco Exploratorium. In 2007, the light show formed a relationship with composer and curator Nick Hallett. The Joshua Light Show has also been featured in museum exhibitions such as "Visual Music" at the Hirshhorn Museum in Washington DC and "The Summer of Love", originating at the Tate Liverpool, then travelling to Frankfurt, Vienna and the Whitney Museum in 2008. The Joshua Light Show's "Liquid Loops" was recently included in the exhibition "60-'69" at the Museum of Modern Art and was acquired by the museum for their permanent collection. In 2014 White collaborated with the artist Guy Richards Smit to create the video/installation/performance project "The Grossmalerman Show."
Output: b