In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.

Ex Input:
Question: What country did Kubrat attend the University of Navarra in? Passage:After completing his primary and secondary education at the Lycée Français in Madrid, Kubrat studied between 1984 and 1990 at the University of Navarra in Pamplona, where he obtained a Licentiate in Medicine and Surgery. After his graduation, he worked for five years as a resident physician at Puerta de Hierro Clinic in Madrid, where he made his expertise as a general surgeon. Subsequently he worked for a year at the St Mark's Hospital and Northwick Park Hospital and further specialized as a surgeon in proctology. Kubrat worked between 1997 and 2003 as a colorectal surgeon at the Ruber International Clinic in Madrid and was in charge of the Ambulatory Surgery Unit. Since September 2003, he became Head of the Colorectal Unit at the San Camillo Hospital in Madrid, where he also acts as Director of the Team Care Management since June 2006. He was director of Shared Medical Systems between 1999 and 2000, and is currently also part of the advisory board of Tokuda Hospital (Sofia, Bulgaria) and a Consultant for Mensor Health Care, S.L in Madrid.


Ex Output:
b


Ex Input:
Question: Which of the places where the steam railcars were stationed is older? Passage:In addition to the joint railcars of 1903, the London Brighton and South Coast Railway directors asked their Chief Mechanical Engineer, Robert Billinton, to investigate the use of steam or petrol railcars on lightly used services. Billinton died in 1904, before examples could be acquired, but in 1905 his successor Douglas Earle Marsh acquired two steam and two petrol railcars, for comparative purposes with small steam locomotives of the Stroudley A1 and D1 classes fitted for "motor train" or "push-pull" working. The steam railcars were built by Beyer, Peacock and Company and were of a similar design to those supplied by this company to the North Staffordshire Railway. They were stationed at Eastbourne and St Leonards and ran services on the East and West Sussex coast lines. They were both loaned to the War Department in 1918/19 before being sold to the Trinidad and Tobago government.


Ex Output:
b


Ex Input:
Question: What year was Sears founded? Passage:Edward J. DeBartolo Corporation formed a joint venture with Homart Development Company, a shopping mall development subsidiary of the department store chain Sears, to begin development on Castleton Square in 1971. DeBartolo announced the mall's development in January of that year and began groundbreaking soon afterward. The original plans called for a Y-shaped enclosed mall with three anchor stores: Sears, J. C. Penney, and Rike Kumler Co. (Rike's), a department store chain based out of Dayton, Ohio. The mall would be situated on 82nd Street just outside the Interstate 465 beltway within the Castleton neighborhood on the northeastern side of Indianapolis. It was the second of three malls built by DeBartolo as a part of its expansion into Indianapolis, following Lafayette Square Mall in 1968 and preceding Washington Square Mall in 1974. The company chose to build on the northeastern side of the Indianapolis metropolitan area, as the area was projected for further suburban growth in the intervening years. Similarly, research conducted by Sears showed a trend in residential growth to the city's northeast side, thus creating a market which the chain deemed suitable for a new store. To accommodate for mall traffic, the Indiana Department of Transportation expanded 82nd Street to a four-lane divided highway. Federated Department Stores (now Macy's, Inc.), then-owners of the Rike's chain, confirmed that the third anchor of Castleton Square would instead be Lazarus, a Columbus, Ohio-based chain then also under their ownership. Also confirmed as tenants for the mall by 1972 were a Kroger supermarket, an F. W. Woolworth Company dime store, and a three-screen movie theater. Inline tenants would include Robert Hall Clothes, Hickory Farms, Kinney Shoes, Zales Jewelers, Waldenbooks, and Orange Julius.


Ex Output:

b