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: What other types of fossils have been found in the Villaieja Formation? Passage:Anachlysictis gracilis is an extinct carnivorous mammal belonging to the group Sparassodonta, which were metatherians (a group including marsupials and their close relatives) that inhabited South America during the Cenozoic. Unlike other remains assigned to the family Thylacosmilidae (a group of metatherian predators equipped with "saber teeth") that had been found previously, Anachlysictis is the first record of such borhyaenoids in northern South America, and also most primitive and ancient in the family (in fact, is the first confirmed record that did not belong to the genus Thylacosmilus, until the official publication of Patagosmilus in 2010). This species was found in the Villavieja Formation in the area of La Venta in Colombia, a famous fossil deposit in the Middle Miocene (Laventan; 13.8-11.8 million years ago), based on fragments that include a front portion of the lower jaw, with an incipient molar tooth and a piece of carnassial from the front of the maxilla.

Example Output: b

Example Input: Question: Who hosted the Billboard Music Awards when Chris Brown performed his song "Turn Up the Music"? Passage:On March 2, 2012, Brown released the first episode of his Fortune web series, showing him backstage at the 2012 Lo Nuestro Awards where he performed "International Love" with Pitbull, playing in a celebrity basketball game during NBA All-Star Weekend in Orlando with rappers Common, 50 Cent, T.I., and singer R. Kelly, as well as partying and dancing at the club. In April 2012, Brown appeared in Australia as one of the performing acts for the urban music festival, Supafest. His set list composed of thirteen songs, which were "Turn Up the Music", "Till I Die", "Run It!", "Deuces", "Yeah 3x", "Look at Me Now", "Beautiful People", "She Ain't You", "Wet the Bed", "My Last", "Body 2 Body" and "Birthday Cake". On May 8, 2012, Brown appeared on Dancing with the Stars (US) to perform "Turn Up the Music". For the performance, Brown and his dancers wore suits. He later performed the song at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena in Paradise, Nevada on May 20, 2012. The performance featured projected images on the stage backdrop and BMX bike stunt troupes racing around the stage, as Brown performed choreographed routines while lip synching. His performance was met with a mixed response from celebrities, most notably Joe Jonas, Pink, and Carey Hart, who all criticized the singer for lip synching. On June 8, 2012, Brown appeared on NBC's Today show and performed "Turn Up the Music", "Don't Wake Me Up", "Yeah 3x" and "Forever", as part of the program's "Summer Concert Series". At the 2012 BET Awards on July 1, 2012, he performed a medley of "Turn Up the Music" and "Don't Wake Me Up", and appeared shirtless for the performance with half his body spray painted in grey. Brown performed acrobatic moves with six backup dancers "under triangle-shaped beams" as green and red flashing lights appeared throughout the stage.

Example Output:
b