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: Who had the longer tenure at the Rockefeller Institute, Emil L. Smith or Max Bergmann? Passage:Initially intending to go into medicine, Smith became interested in biology and organic chemistry during his second year at Columbia University. He earned a B.S. in 1931 and stayed at Columbia to study photosynthesis under Selig Hecht, completing a Ph.D. in biophysics in 1936. In 1938, he went to Cambridge University on a Guggenheim Fellowship to work with David Keilin on the chlorophyll-protein complex. Upon returning to the U.S. during World War II, he took a position at Yale University's Connecticut Agricultural Experiment Station to work with Hubert Bradford Vickery. He joined the lab of eminent protein chemist Max Bergmann at the Rockefeller Institute in 1940, where he worked with a number of important biochemists and began a significant line of research on the intestinal enzyme erepsin.


a