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.

Example Input: Question: In what city did Steinmetz earn his B.S. degree? Passage:Steinmetz is a specialist in the areas of cosmology, the formation and evolution of galaxies and computational astrophysics. Steinmetz has a B.S. in Mathematics and Physics from the Saarland University (1988) and a M.S. in Physics from the Technical University of Munich (1991). He received his Ph.D. in Physics in 1993 at the Max Planck Institute for Astrophysics in Garching. For his thesis "On the formation and evolution of galaxies" he was awarded the Otto Hahn Medal of the Max Planck Society. He was a postdoctoral fellow at the Max Planck Institute for Astrophysics and at the Department for Astronomy at the University of California, Berkeley. In 1996 he joined the faculty of Steward Observatory at the University of Arizona in Tucson. Since 2002 he has been the director of the Astrophysical Institute Potsdam (AIP) and professor at University of Potsdam. He also holds a position of adjunct professor at Steward Observatory.

Example Output: b

Example Input: Question: What years are the setting for Davidson's first novel? Passage:When the war ended, he returned to the Keystone Agency and travelled all over Europe as a freelance reporter. It was during one of these trips that he came up with the idea for his first thriller, The Night of Wenceslas (1960). The novel is set in Czechoslovakia during the Cold War, and tells the story of young Nicolas Whistler, a 24-year-old Londoner whose business trip to Prague goes horribly awry. The Night of Wenceslas was an instant success, inviting favourable comparisons with such luminaries as Eric Ambler. Davidson became one of the handful of living writers to have their first novel appear in a green Penguin jacket. The book won the Crime Writers' Association's Gold Dagger Award (the top prize for crime and spy fiction in Britain) as well as the Authors' Club First Novel Award. It was filmed as Hot Enough for June (1964), with Dirk Bogarde in the role of Whistler.

Example Output: b

Example Input: Question: Which dynasty ruled longer? Passage:The 7th century Nayanar saints Sambandar and Appar wrote of the temple in their poetic work, Tevaram. The original masonry and towers date back to the 9th century CE, as seen from an inscription in the structure made by Chola kings. The Chola kings ruled over the region for more than four centuries, from 850 CE to 1280 CE, and were temple patrons. The temple complex dates from the time of the 10th century AD Medieval Chola king Uttama Chola whose inscriptions are found in its walls. An inscription dated to the fifteenth year of Raja Raja Chola makes a reference to "Panchavanmahadevi chaturvedimanagalam", which is another name for Nallur. There are also inscription by Later Chola kings and by Hoysala monarchs. The inscriptions from the Chola kings record various gifts like land, sheep, cow and oil to the temple commemorating various victories of the dynasty. There are lot of inscriptions from the Sangama Dynasty (1336–1485 CE), Saluva Dynasty, and Tuluva Dynasty (1491–1570 CE) of the Vijayanagara Empire, reflecting gifts to the temple from their rulers. The majority of the gift related inscriptions are for land endownments, followed by goods, cash endowments, cows and oil for lighting lamps. The temple has been maintained by the Thiruvaduthurai Adheenam from the early part of the 13th century.

Example Output:
b