Instructions: 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 town was larger, the one Piers Nash was born in, or the one he grew up in? Passage:Born in Exeter, England, and grew up in Sudbury, Ontario, Canada. In high school he competed in the Canada-Wide Science Fair in five successive years (1983–87), winning awards on each occasion and becoming one of the most highly awarded science fair participants in the history of the fair. In recognition of this he was selected to represent Canada as one of two youth delegates to the 1985 Nobel Prize lectures and ceremony in Stockholm, Sweden as part of the Stockholm International Youth Science Seminar and was awarded the International Youth Year Ontario Gold Medal. He received a BSc with honours in biochemistry from the University of Guelph, and the Chemical Institute of Canada prize for the top of class. He received a PhD in 1999 from the University of Alberta working in the laboratory of Dr. Grant McFadden investigating poxviral immunomodulatory proteins. His doctoral thesis focused on the enzymology and biological properties of the Myxoma virus encoded serine proteinase inhibitor (serpin), SERP-1. He completed postdoctoral research with Anthony Pawson at the Samuel Lunenfeld Research Institute of Mount Sinai Hospital and the University of Toronto from June 1999 to December 2003. In 2014, Nash received an MBA with a concentration in finance awarded with high honors from the University of Chicago Booth School of Business.

Output:
a