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: When was the star in Draco that is visible primarily in the northern hemisphere discovered? Passage:Like the star Epsilon Draconis in the constellation of Draco, Beta Cephei is visible primarily in the northern hemisphere, given its extreme northern declination of 70 degrees and 34 minutes. It is nevertheless visible to most observers throughout the world reaching as far south as cities like Harare in Zimbabwe, Santa Cruz de la Sierra in Bolivia or other settlements north ± 19° South latitude. It is circumpolar throughout all of Europe, northern Asia, and North American cities as far south as Guadalajara in west central Mexico. All other locations around the globe having a latitude greater than ± 20° North will notice that the star is always visible in the night sky. Because Beta Cephei is a faint third magnitude star, it may be difficult to identify in most light polluted cities, though in rural locations the star should be easily observable.

Example Output: a

Example Input: Question: Who is younger between the two creators of the South Park series? Passage:South Park is a first-person shooter adventure video game based on the American adult animated sitcom of the same name. The game was developed by Iguana Entertainment and published by Acclaim Entertainment for the Nintendo 64 in 1998 for North America and in 1999 for Europe. It was later ported to Microsoft Windows in 1999 and released in North America only. The PlayStation port was developed by Appaloosa Interactive in 1999. A Game Boy Color version developed by Crawfish Interactive was in development, but it was eventually cancelled due to South Park creators Matt Stone and Trey Parker stating that the game would not be fitting on the Game Boy Color as that console was marketed towards children. However, they did keep a few copies of the Game Boy Color version to commemorate what was originally started as the first South Park game. Despite the Nintendo 64 version's positive reception, the PC and PlayStation versions of South Park were panned by critics. A Sega Dreamcast version was planned for a 2000 release, but was cancelled during development for unknown reasons. In 2018, a ROM image of the Game Boy Color version was leaked online.

Example Output: b

Example Input: Question: How old was Davide Ballardini when he was replaced by Nedo Sonetti? Passage:More recently, Sonetti joined Cagliari on November 2005, replacing Davide Ballardini, becoming the fourth coach appointed by the Sardinian team in a couple of months. He succeeded in maintaining his job until the end of the tournament, and in leading the rossoblù to maintain a place in the next Serie A; he left Cagliari at the end of the season. On 14 November 2006, Sonetti was appointed to replace Attilio Tesser at the helm of then last-placed relegation-battling Serie A Ascoli. He did not manage to save his side from falling to Serie B, and ended his experience in Ascoli at the end of the season with a second-last place. On November 2007 he returned at Cagliari for his third time, as he was appointed to replace Marco Giampaolo at the helm of the Sardinians. He resigned from his post on 19 December, but was confirmed by the club the next day after Marco Giampaolo rejected to return at the helm of the club. However, Sonetti was sacked only a few days later, after a 5–1 loss to Fiorentina, leaving the team last-placed in the league table, being replaced by Davide Ballardini. From 25 September 2008, he has been called back to Brescia replacing Serse Cosmi. On 19 May 2009 he was sacked himself, following a 2–1 loss to promotion rivals Grosseto that left Brescia in fourth placed, but with only a two-point lead to 7th-placed Triestina.

Example Output:
b