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: What other teammates had Roberts had before partnering with Lawson? Passage:Lawson accepted an offer from Yamaha to contest the 500cc World Championship as Kenny Roberts' teammate for the 1983 season. Lawson spent the 1983 season learning the ropes of the Grand Prix circuit. In 1984, Lawson began winning regularly and won the 1984 World Championship. It would mark the first of four world titles Lawson would go on to win. In 1985, he won the prestigious Imola 200 pre-season race. After winning two more titles for Yamaha in 1986 and 1988, Lawson shocked the racing world by announcing he would be leaving Yamaha to sign with their arch-rivals Rothmans Honda as teammate to his own archrival, Australia's 1987 World Champion Wayne Gardner. By switching teams, Lawson also fulfilled his desire to work with Erv Kanemoto. After Gardner crashed and broke his leg during the third round at Laguna Seca, Lawson went on to win the 1989 title for Honda, becoming the first rider to win back-to-back championships on machines from different manufacturers. By winning with both Yamaha and Honda, Lawson silenced his critics who believed he would not be as successful away from the factory Marlboro Yamaha team.

Example Output: b

Example Input: Question: Who were the first commander of the regiment Erwin served in during the American Civil War? Passage:Born in Washington, Lycoming County, Pennsylvania, Erwin settled in Portage, Wisconsin in 1853. From 1855 to 1868, Erwin lived in Jo Daviess County, Illinois and then in Stephenson County, Illinois. During the American Civil War, Erwin served in the 45th Illinois Volunteer Infantry Regiment. In 1868, Erwin moved to Tomah, Wisconsin and was in the mercantile business. From 1879 to 1882 and 1886, Erwin served on the Tomah Board of Education and was president of the school board. From 1882 to 1889, Erwin served in the Wisconsin State Senate and was a Republican. In 1889, Erwin served as postmaster for Tomah, Wisconsin. In 1902, Erwin moved with his family to Milwaukee, Wisconsin. Erwin died suddenly in Savanna, Illinois just as he was about get on a train for a trip to Omaha, Nebraska.

Example Output: b

Example Input: Question: How long had Milo Aukerman been with the Descendent's before quitting? Passage:In 1987 SST Records had purchased the Descendents' previous label New Alliance Records, releasing their 1987 album All and re-releasing all of their previous material. Following the Descendents' final tours in spring and summer 1987, singer Milo Aukerman had left the band to pursue a career in biochemistry. The remaining members—bassist Karl Alvarez, guitarist Stephen Egerton, and drummer Bill Stevenson—relaunched the band under the name All, releasing three albums on the SST subsidiary Cruz Records between 1988 and 1991 with singers Dave Smalley and Scott Reynolds. SST also released the Descendents live albums Liveage! (1987) and  (1989), both recorded during the final two Descendents tours. Somery was released in 1991, compiling tracks from the Descendents' past studio releases. Stevenson created the cover art for the compilation while Egerton did the graphics. The Descendents would later reunite with Aukerman in 1995 to record Everything Sucks.

Example Output:
b