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: Which North American city hall building that used Superblocks was completed first? Passage:Superblocks are also used when functional units such as rail yards or shipyards, inherited from the 19th and early 20th centuries, are too big to fit in an average city block. A contemporary function which reflects ancient practices that also requires larger than typical blocks is the sports stadium or arena. Just as the Colosseum in ancient Rome, sports complexes require superblocks. The Providence Park stadium in Portland, for example, takes up four normal city blocks as does the equally large Greensboro Coliseum in North Carolina. Other contemporary institutions, establishments or functions that use superblocks are: city halls like Government Center, Boston and Toronto City Hall; regional general hospitals or specialized medical centres; convention and exhibition centers, such as Exhibition Place in Toronto and the Boston Convention and Exhibition Center; and downtown enclosed Shopping Malls such as Eaton Centre in Toronto, echoing the large gallerias of the 19th century. Cultural complexes, such as the Lincoln Center in New York City, often occupy a superblock achieved through the consolidation of regular city blocks. A recent superblock user is the merchandise distribution centre, which can range in area from one to ten city blocks.

Example Output: a

Example Input: Question: Who is the mayor of the town Archer was born in? Passage:Born in Densmore, Kansas, Archer moved to Topeka, Kansas where he attended public high school. Archer received a Bachelor of Arts degree in English literature from Yale University in 1952 and a Juris Doctor, with honors, from George Washington University Law School in 1954. He served as a First Lieutenant in the Judge Advocate General's Office of the United States Air Force from 1954 to 1956. He entered private practice in Washington, D.C., as an associate in the law firm of Hamel, Park, McCabe and Saunders from 1956 to 1960 and a partner from 1960 to 1981. Archer served as Assistant Attorney General in charge of the United States Department of Justice Tax Division from 1982 to 1984.

Example Output: a

Example Input: Question: Hisaishi composed three title songs in 1981 - which had the most sales? Passage:In 1985, he founded his own recording studio—the wonder station. Their collaboration has invited comparisons to the collaborations of Steven Spielberg and John Williams. This big break led to Hisaishi's overwhelming success as a composer of film scores. In 1986, , would be the first feature to appear under the Studio Ghibli banner, and its gentle, faintly melancholic tone would become a familiar trademark of much of the studio's later output. And later, in the 1990s, Porco Rosso and Princess Mononoke were released. As Hisaishi strengthened his reputation as one of the budding anime industry's top musical contributors, his compositions (including eight theatrical films and one OAV) would proceed to become some of the very hallmarks of early anime in the 1980s and 1990s. Hisaishi also composed for such TV and movie hits as Sasuga no Sarutobi, Two Down Full Base, Tonde Mon Pe and the anime Tekuno porisu 21C (all 1982), Sasuraiger (1983), Futari Taka (1984), (1985) and Oz no mahôtsukai (1986). He also scored the sci-fi adventure series Mospeada (1983), which was later reworked (without his music) into the third segment of Carl Macek's compilation, Robotech. Other films he scored included Mobile Suit Gundam Movie II: Soldiers of Sorrow (1981), Mobile Suit Gundam Movie III: Encounters in Space, (1982), Birth (Bâsu) (1984), Arion (1986), Robot Carnival (1987), Totoro (1988), Crest of the Royal Family and Maison Ikkoku – Apartment Fantasy (both 1988), Venus Wars (1989), Kiki's Delivery Service (1989), Porco Rosso (1992) and Ocean Heaven (2010). He also did theme song arrangements and composed other anime opening, closing, and insert title theme songs such as Mahō Shōjo Lalabel (1980), Hello! Sandybell (1981), Meiken Jolie (1981), Voltron (1981), Ai Shite Knight (1983), Creamy Mami, the Magic Angel: Curtain Call (1986), and  (1988).

Example Output:
a