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.

Input: Consider Input: Question: How old is the city that US route 13 starts in? Passage:U.S. Route13 (US13) is a U.S. highway running from Fayetteville, North Carolina north to Morrisville, Pennsylvania. In the U.S. state of Delaware, the route runs for . It traverses the entire length of the state from the Maryland state line in Delmar, Sussex County to the Pennsylvania state line in Claymont, New Castle County. US13 connects many important cities and towns in Delaware, including Seaford, Dover, and Wilmington. The entire length of US13 in Delaware is a multilane divided highway with the exceptions of the segment through Wilmington and parts of Philadelphia Pike in Claymont. Between the Maryland border and Dover, US13 serves as one of the main north-south routes across the Delmarva Peninsula. From Dover north to the Wilmington area, the route is followed by the limited-access Delaware Route1 (DE1) toll road, which crosses the route several times and has multiple interchanges with it. US13 bypasses downtown Wilmington to the east before it heads northeast of the city parallel to Interstate495 (I-495) and the Delaware River to Claymont. US13 is the longest numbered highway in the state of Delaware.

Output: b

Input: Consider Input: Question: What year did Eisner's "Mad Dog" ad for Zima originally air? Passage:Eisner had used some of Digital Domain's processors to render images for his film, and the company suggested he meet with some commercial production houses. Thus began his career as a director of commercials, and after only a year-and-a-half, Eisner had directed 14 high-profile spots. His first commercial was Budweiser's Powersurge, which aired during the 1997 Super Bowl. He also took the helm for Rold Gold pretzels' "Comrades" starring Jason Alexander, which featured Pretzel Boy on a rescue mission to the Mir space station. Eisner's two anti-smoking spots for the California Department of Health Services, "Gala Event" and "Funeral", were selected as Best Spots in back-to-back issues of Adweek. In addition, Eisner's "Mad Dog" for Coors's Zima aired during the Seinfeld finale and was chosen by USA Today "Ad Meter" as the #1 spot. He has also done commercials for Sony, Sega and Coca-Cola.

Output: b

Input: Consider Input: Question: How old was Walter's oldest son when Walters passed away? Passage:Walter was born in Kansas City, Missouri, United States, in 1910. His ancestry was German/British on his father's side, and American/British on his mother's side. He was brought to England in 1915, and educated at Westminster School and afterwards in King's College, Cambridge, in 1931. He failed to obtain a research fellowship in Cambridge and so turned to doing basic and applied neurophysiological research in hospitals, in London, from 1935 to 1939 and then at the Burden Neurological Institute in Bristol, from 1939 to 1970. He also carried out research work in the United States, in the Soviet Union and in various other places in Europe. He married twice, had two sons from his first marriage, and one from the second. According to his eldest son, Nicolas Walter, "he was politically on the left, a communist fellow-traveller before the Second World War and an anarchist sympathiser after it." Throughout his life he was a pioneer in the field of cybernetics. In 1970, he suffered a brain injury in a motor scooter accident. He never fully recovered and died seven years later, on May 6, 1977.
Output: b