Definition: 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.
Input: Question: Which university has more students - the university where Petraeus got his M.P.A., or the university where he completed a military fellowship? Passage:Petraeus graduated from West Point in 1974. He earned the General George C. Marshall Award as the top graduate of the U.S. Army Command and General Staff College Class of 1983 at Fort Leavenworth, Kansas, receiving a Bachelor of Science degree in Military Science. He subsequently earned an M.P.A. in 1985 and a Ph.D. in international relations in 1987 from Princeton University's Woodrow Wilson School of Public and International Affairs, where he was mentored by Richard H. Ullman. At that time, he also served as an Assistant Professor of International Relations at the U.S. Military Academy from 1985 to 1987. His doctoral dissertation was titled "The American Military and the Lessons of Vietnam: A Study of Military Influence and the Use of Force in the Post-Vietnam Era". He also completed a military fellowship at Georgetown University's Edmund A. Walsh School of Foreign Service in 1994–1995, although he was called away early to serve in Haiti as the Chief of Operations for NATO there in early 1995.


a