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.

Example Input: Question: How long had the Algerian war been going on when Kopanski was 14? Passage:In 1962, when only 14, he was fascinated by the success of the Arab national and anti-colonial forces that defeated the French colonial armies in the Algerian War, gaining independence for their country. When attending a military college in Kętrzyn (Ger. Rastenburg) in 1966-1969, he actively opposed the Polish communist regime during the 1968 Polish political crisis, and as a result was expelled from the Officer School, and became a political prisoner for the first time. He continued his studies at the University of Silesia in Katowice, and after graduation was employed there as a lecturer,adiunct and researcher. In 1980-81, when Poland was swept by a wave of anti-communist strikes, and around ten million joined the anti-communist Solidarity trade union, Kopański co-founded a branch of this broad grassroots social movement at the University of Silesia.

Example Output: b

Example Input: Question: Is the fort built to protect Philadelphia on the Pennsylvania side still standing? Passage:Fort Mercer was a fort on the Delaware River in New Jersey constructed by the Continental Army during the American Revolutionary War. Built by Polish engineer Thaddeus Kosciuszko under the command of George Washington, Fort Mercer was built in 1777 to block the approach to Philadelphia, Pennsylvania in concert with Fort Mifflin on the Pennsylvania side. Fort Mercer was located in an area called Red Bank, in what is now the borough of National Park, Gloucester County, New Jersey. The fort was named in honor of Brigadier General Hugh Mercer who had died earlier that year at the Battle of Princeton. The fort's site is now part of Red Bank Battlefield Historical Park, which includes a monument and museum. Several cannons attributed to British warships lost supporting the attack on the fort, and others found buried at the fort itself, are in the park.

Example Output: b

Example Input: Question: Was Belgrade the capital of Serbia? Passage:Đorđević was born in Belgrade to a prominent Serbian family. When he was a law student, the Germans invaded Yugoslavia during World War II and he joined the resistance movement of Dragoljub Mihailovic. Đorđević was captured by the Germans and was imprisoned, ultimately in Mauthausen-Gusen concentration camp in Austria. He survived the war, but was in turn imprisoned by the communist regime in post World War II Yugoslavia. After he was pardoned and released, Đorđević was eventually allowed to commence study at the University of Belgrade, where he was a student of Vaso Čubrilović (one of the members of the Young Bosnia who conspired to assassinate Franz Ferdinand which led to the outbreak of World War I). Đorđević was awarded his doctorate in 1962. In 1970, Đorđević took up a position as a Full Professor of History at the University of California, Santa Barbara, joining a strong faculty in European History including Joachim Remak, Frank J. Frost, Leonard Marsak, Alfred Gollin, and C. Warren Hollister. He was elected a member of the Serbian Academy of Science and Arts in 1985. A popular undergraduate lecturer and graduate mentor at the University of California, Santa Barbara, in 1992 many of his former students contributed to his Festschrift entitled Scholar, Patriot, Mentor: Historical Essays in Honor of Dimitrije Djordjevic. In retirement, Đorđević published his autobiography, Scars and Memory: Four Lives in One Lifetime, describing his World War II and post World War II experiences. Professor Đorđević died in Santa Barbara on March 5, 2009.

Example Output:
a