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: Consider Input: Question: Of the 8 fraternities at the University of Alabama in the 1800s, which was the oldest on a national level? Passage:Greek letter organizations (GLOs) first appeared at the university in 1847 when two men visiting from Yale University installed a chapter of Delta Kappa Epsilon. When DKE members began holding secret meetings in the old state capitol building that year, the administration strongly voiced its disapproval. Over a few more decades, 7 other fraternities appeared at UA: Alpha Delta Phi in 1850, Phi Gamma Delta in 1855, Sigma Alpha Epsilon in 1856 (this was the founding chapter), Kappa Sigma in 1867, Sigma Nu in 1874, Sigma Chi in 1876, and Phi Delta Theta in 1877. Anti-fraternity laws were imposed that year, but were lifted in the 1890s. Women at the university founded the Zeta chapter of Kappa Delta sorority in 1903. Alpha Delta Pi soon followed.


Output: a


Input: Consider Input: Question: When was the organization where Ingold was made an officer in 1995 founded? Passage:He was born to Sir Christopher Ingold and Dr. Hilda Usherwood, and studied for a BSc in Chemistry at the University of London, completing his degree in 1949. He continued his higher education with a PhD in chemistry at Oxford University, which he completed in 1951. Soon after graduation he moved to Canada to begin work with the National Research Council, followed by two years of post-doctoral research at the University of British Columbia. He returned to work for the NRC in 1955 as a research officer, followed by a promotion to head of the Free Radical Chemistry Section. He was awarded the 1968 Petroleum Chemistry Award, the 1988 Linus Pauling Award, and both the Davy Medal and Royal Medal of the Royal Society, the latter for "elucidating the mechanism of reactions involving free radicals". In 1995 he was made an officer of the Order of Canada. He has received honorary degrees from the universities of Guelph, Mount Allison, St Andrews, Carleton, McMaster and Dalhousie.


Output: b


Input: Consider Input: Question: In what city is the institution located where Mukhopadhyay first did post-doctoral work? Passage:Born on the New Year's Day of 1966 at Khargapur in the Indian state of Madhya Pradesh, Sangita Mukhopadhyay completed her MSc with a gold medal and did her doctoral studies at the Regional Medical Research Center, Bhubaneswar which fetched her a Phd from Utkal University in 1998 for her thesis on immunoregulation in filariasis. Subsequently, she did the post-doctoral work at the National Institute of Immunology and, later, in U.S.A. at the University of Texas Health Science Center at Houston. On her return to India, she joined the Central Drug Research Institute in 1999 and after a short stint, moved to the Centre for DNA Fingerprinting and Diagnostics (CDFD). She later became the head of the Molecular Biology Group at the Laboratory of Molecular and Cellular Biology of the institute and holds the position of a Grade IV staff scientist. At her laboratory, she hosts many research scholars who are involved in the studies in the disciplines of cell signaling and signal transduction, immunity, macrophage biology and tuberculosis.



Output: b