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: Which US Air Force plane that was shot down in Yugoslavia is the fastest? Passage:An important portion of the 1999 war between Yugoslavia and the NATO coalition involved combat between the Yugoslav Air Force, which was the predecessor of today's Serbian Air Force, and the opposing air forces of NATO. United States Air Force F-15s and F-16s flying mainly from Italian air force bases attacked the defending Yugoslav fighters—usually MiG-29s, which were in bad shape, due to lack of spare parts and maintenance. A total of six Yugoslav MiG-29s were shot down in 1999, of which three were shot down by USAF F-15s, one by a USAF F-16, and one by a RNAF F-16. One aircraft, according to a Serbian documentary, was hit by friendly fire from the ground. Another four were destroyed on the ground. During the course of the air war, Yugoslav anti-aircraft defenses downed a USAF F-16C and an F-117 Nighthawk, the first stealth aircraft to ever be shot down in combat.


Output: b


Input: Consider Input: Question: Who did Manuel's uncle run against for the mayorship of Ciales? Passage:Natal was born into a family with strong ties to the local politics. His maternal uncle, Javier Albelo Matos, served as a candidate for the mayorship of Ciales the 2000 general election, while his paternal grandfather was an activist for the Partido Popular Democratico (PPD). He studied at Colegio Espíritu Santo in Hato Rey, where he was president of the Student Council. Natal obtained a bachelor's degree from Cornell University in 2008, where he was president of the Puerto Rican Student Association. He did not expect to be accepted by the institution, having applied to study in it as a protocolary measure. When the acceptance letter was received, Natal was surprised and this event triggered a period of adaptation. He offered a speech at his graduation in his role of class president. After returning to Puerto Rico, Natal received a juris doctor from the University of Puerto Rico School of Law in 2011, also serving as president of the student council during his tenure. After graduating from Cornell, Natal became a key figure in a series of strikes held at the University of Puerto Rico in protest of a quota being introduced to the students. Consequently he became involved with the Popular Democratic Party and participated in an internal election for the presidency of the party's National Youth organization. After completing his juris doctor Natal opened his own lawfirm and worked for Charlie Hernández and Luis Vega Ramos, prominent members of the free association movement. In 2013, Natal was named director of the House of Representatives of Puerto Rico Commission on the Judiciary.


Output: a


Input: Consider Input: Question: What age was Pirow when his fascist group was formed? Passage:Nazism found an audience in the country, with pro-Nazi elements organised by Louis Weichardt in 1932 under the name South African Gentile National Socialist Movement, a group that soon became known as the Greyshirts. Although the group enjoyed some support and continued after the Second World War they never became sufficiently important for the government to take action against them. The other main fascist group was the Ossewabrandwag (OB), founded in 1939, a group also inspired by Adolf Hitler. The two differed however as the Greyshirts emphasised Aryan race rhetoric and so organised amongst the various white immigrant communities whilst the OB were specifically for Afrikaner only. A third, more minor group, the New Order, emerged in 1940 under the leadership of former cabinet minister Oswald Pirow. After the Second World War Pirow became an important figure in neo-fascism, working closely with Oswald Mosley, Nation Europa and A. F. X. Baron. Nazi Germany sought to encourage such activity with former Olympic boxer Robey Leibbrandt active as an agent for the Abwehr during the war. The Nazi Party itself also organised until it was outlawed in 1936.



Output: b