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.

Ex Input:
Question: In what city did Raiford major in communication? Passage:'Robert D. Raiford (December 27, 1927 – November 17, 2017) was an American radio broadcaster and actor, best known for his political/social commentaries delivered during The John Boy and Billy Big Show, a morning radio program heard on stations throughout the American South. He was from Concord, North Carolina and majored in communication at the University of South Carolina. Raiford got his start in broadcasting in 1944 by calling play by play at baseball games. His first real radio job was at WEGO (AM) in Concord, North Carolina. Raiford has appeared in 28 movies, often portraying judge characters. He frequently closed his commentaries with the line "Who says that? I say that!", which also served as the title of a book containing excerpts from these segments. Early in his career, Raiford worked for WTOP radio and WTOP-TV, both CBS News affiliates in Washington, D.C.. His best-known work was a live radio broadcast on WTOP, a CBS Radio affiliate, covering the state funeral of President John F. Kennedy. He also worked at Charlotte radio station WBT. Raiford also hosted a show on WIST, which aired Charlotte's first telephone talk radio format. He later taught Communications at the University of North Carolina at Charlotte. From 1978 to 1986, Raiford was a news anchor and talk show host for Charlotte's NBC television affiliate. It was known as WRET-TV and then WPCQ-TV during his tenure there; it is now WCNC-TV. On the June 9, 2016, episode of The John Boy and Billy Big Show, John Isley ("John Boy") announced that Raiford had retired from the show, due to suffering a stroke the previous August that greatly affected his speech and mobility. Raiford had not delivered any commentaries during the intervening months, choosing to focus on his recovery instead.


Ex Output:
b


Ex Input:
Question: How old was the race track where Lyons tested in an ARCA Racing Series car? Passage:Lyons started his racing career at the age of six, racing dirt bikes. Lyons raced dirt bikes for over a decade, winning two Florida championships. After injuring both legs in a crash when he was fifteen, Lyons quit bike racing at eighteen. He then moved to Legends car racing after seeing former motocross racer Ricky Carmichael transition. After Legends cars, Lyons competed in the Pro All-Stars Series in 2014. In December 2014, Lyons tested at Daytona International Speedway in an ARCA Racing Series car that was prepared by both Rick Ware Racing and MacDonald Motorsports. In early 2015, Lyons joined Chad Finley and his team as a development driver to compete in the 2015 CARS Tour; Lyons wound up only running three of the races. Lyons made a return to the CARS Tour in 2017 and also competed in the Short Track Nationals at Bristol Motor Speedway.


Ex Output:
b


Ex Input:
Question: How many people lived in the United States the year that Barschall emigrated to the country? Passage:Barschall was born as Heinrich Hermann Barschall in Berlin, Germany; his father was a patent attorney who had received a Ph.D. in chemistry after studying with Nobel Laureates Emil Fischer and Fritz Haber. After beginning study in several universities in Germany, he emigrated to the United States in 1937 during the early Holocaust period; though raised as a Lutheran, he had some Jewish ancestry. He received his Ph.D. from Princeton University in 1940 under the direction of Rudolf Ladenburg; he also worked closely with John A. Wheeler. After a suggestion by Niels Bohr, he carried out in only a few days with fellow graduate student Morton H. Kanner the first demonstration of fission by fast neutrons and thorium and uranium. His thesis was on the interaction of fast neutrons with helium. In a paper with John A. Wheeler he reported the discovery of spin-orbit coupling in neutron scattering.


Ex Output:

b