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: Where did Sheehan's team play their home games when he was playing for an indoor football team in the CIFL? Passage:Tyler Allen Sheehan is a former American football quarterback. Sheehan played collegiately at Bowling Green State University after a standout career at La Salle High School in Cincinnati, Ohio. After going undrafted in the 2010 NFL Draft, he signed with Houston Texans, where he was released after training camp. In 2011, he signed with the Cincinnati Commandos of the Continental Indoor Football League. Sheehan led the Commandos to a perfect 10-0 regular season, winning the league's MVP award. In the playoffs, Sheehan led the Commandos to the 2011 CIFL Championship Game, where they defeated the Marion Blue Racers 44-29. After the Commandos season ended, Sheehan signed with the Arizona Rattlers of the Arena Football League, but never appeared in a game. In 2012, Sheehan returned to the Commandos and led them to a 7-2 record, this time in the United Indoor Football League. The Commandos took the first place seed into the playoffs, and won Ultimate Bowl II 62-44 over the Florida Tarpons.

Example Output: b

Example 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 fightersusually 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.

Example Output: b

Example Input: Question: What version of Windows had most recently been released when The Settlers: Heritage of Kings was released in North America? Passage:The Settlers: Heritage of Kings (), released as Heritage of Kings: The Settlers in North America, is a real-time strategy video game developed by Blue Byte and published by Ubisoft. Released in Germany for Microsoft Windows in November 2004, and in the United Kingdom and North America in February 2005, it is the fifth game in The Settlers series. In 2005, Blue Byte released two expansions, The Settlers: Heritage of Kings - Expansion Disc () and The Settlers: Heritage of Kings - Legends Expansion Disc (), in March and September respectively, featuring new single-player campaign missions, new maps for both single-player and multiplayer modes, a map editor, and a random map generator. In November, The Settlers: Heritage of Kings - Gold Edition was released, containing the original game and the first expansion. In 2009, the original game was also released on GOG.com. In 2018, the game was re-released as The Settlers: Heritage of Kings - History Edition.

Example Output:
b