Given the task definition and input, reply with output. In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.

Question: Of the schools where Craig Becker taught, which one was established first? Passage:Becker clerked for Judge Donald P. Lay from 1981 through 1983. He then worked at Kirschner, Weinberg & Dempsey (19831989), a law firm located in Washington, D.C., and represented members of the American Federation of State County and Municipal Employees and its affiliates, including the Harvard Union of Clerical and Technical Workers. He was a faculty member at UCLA Law School (19891994) and has also taught at Georgetown University Law School (19871988, 2012), the University of Chicago Law School (199495), and Yale Law School (2016, 2017). He has been Associate General Counsel to the AFL-CIO and the Service Employees International Union (SEIU). Throughout his career, he has argued many cases in court, including in front of the Supreme Court of the United States. In 2009, he was a member of the Obama transition team, assisting with the review of the United States Department of Labor.
a