In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as `a` for Yes or `b` for No.

Example Input: Question: Was Pete Townshend younger than Brian May the year "My Generation" was released? Passage:A deliberate use of acoustic feedback was pioneered by Blues and Rock'n'Roll guitarists such as Willie Johnson, Johnny Watson and Link Wray. According to AllMusic's Richie Unterberger, the very first use of feedback on a commercial rock record is the introduction of the song "I Feel Fine" by the Beatles, recorded in 1964. Jay Hodgson agrees that it was the first chart-topper to showcase feedback distortion, created by John Lennon leaning a semi-acoustic guitar against an amplifier. The Who's 1965 hits "Anyway, Anyhow, Anywhere" and "My Generation" featured feedback manipulation by Pete Townshend, with an extended solo in the former and the shaking of his guitar in front of the amplifier to create a throbbing noise in the latter. Canned Heat's "Fried Hockey Boogie" (off of their 1968 album Boogie with Canned Heat) also featured guitar feedback produced by Henry Vestine during his solo to create a highly amplified distorted boogie style of feedback. In 1963, the teenage Brian May and his father custom-built his signature guitar Red Special, which was purposely designed to feed back.

Example Output: a

Example Input: Question: What song on Hammer's debut album samples a song by the same name from BB King? Passage:Before Hammer's successful career (with his mainstream/commercial popularity lasting approximately between the mid-1980s until the late-1990s) and his "rags-to-riches-to-rags-and-back saga", Burrell formed the Christian rap music group Holy Ghost Boys. Some songs produced were called "Word" and "B-Boy Chill". "The Wall", featuring Burrell (it was originally within the lyrics of this song he first identified himself as "K.B." and then eventually M.C. Hammer once it was produced), was later released by Jon Gibson (aka "J.G."). This was Contemporary Christian music's first rap hit ever (by anyone), in particular by a Caucasian (Gibson) and/or from a duo. The track appeared on Gibson's album Change of Heart (1988), and "Son of the King" showed up on Hammer's debut album Feel My Power (1987) as well as the re-released version Let's Get It Started (1988). Burrell, along with Tramaine Hawkins, performed with Gibson's band doing several concerts in various venues such as the Beverly Theatre in Beverly Hills.

Example Output: b

Example Input: Question: Of the organizations Benny has chaired, which one is older? Passage:Benny Moldovanu earned a BSc and MSc in mathematics from the Hebrew University of Jerusalem in 1986 and 1989, respectively, the latter under the supervision of Bezalel Peleg. He then obtained a PhD in economics from the University of Bonn, with future Nobel Memorial Prize winner Reinhard Selten as advisor, in 1991 and habilitated there in 1995. Having worked as assistant professor of economics at the University of Bonn after his PhD (1991–95), he then became full professor at the University of Mannheim (1995–2002) before returning to the University of Bonn in 2002, where he has worked ever since. At Bonn, he has been the Co-Director and later Academic Director of the Bonn Graduate School of Economics (2006–13) as well as Co-Director of the Hausdorff Center for Mathematics (2006–13), where he today leads the research area on mechanism design and game theory.. Moreover, at Bonn, Moldovanu is currently Director of the Institute of Microeconomics (since 2012) as well as of the Reinhard Selten Institute for Research in Economics (since 2017). Throughout his professional career, Moldovanu has held visiting appointments at the University of Michigan, Ann Arbor, Northwestern University, University College London, Yale University, Tel Aviv University, and the Hebrew University of Jerusalem. In terms of professional activities, he has been a member of the Councils of the European Economic Association and Game Theory Society, is a research fellow at the Centre for Economic Policy Research (CEPR), and has chaired the Scientific Committees of the Econometric Society and German Economic Association. Finally, he has performed editorial duties for Econometrica, Journal of the European Economic Association, Games and Economic Behavior, Journal of Economic Theory, and Economic Policy.

Example Output:
a