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: Who did Eintracht Frankfurt defeat in the 1959 German Championship? Passage:His club was Eintracht Frankfurt with whom he won the 1959 German Championship, and in 1960 reached the finals of Champion's Cup against Real Madrid. The left-footed Don Alfredo was the head of the team. Pfaff was a true playmaker with exceptionally good ball control and great skills at free kicks. Pfaff probably would have accumulated more than seven caps if Fritz Walter had not played the same role for West Germany as Pfaff played for Eintracht Frankfurt. In 1954, Atletico Madrid offered him 180,000 D-Mark but his wife Edith was against a move to Spain. Possibly Pfaff's greatest game was the 61 against Rangers F.C. in the 195960 semifinal first leg of the European Champion Clubs' Cup, which was followed by a 63 win of Eintracht Frankfurt in Glasgow in the second leg. He ended his career in 1962 at the age of 36.

Example Output: a

Example Input: Question: Who is the current president of the university where Hass studied a degree course in History? Passage:Gerhart Hass was born in Berlin roughly two years before the Nazis took power and transformed Germany into a one-party dictatorship. By the time he left school in 1949 half of Berlin and a large area surrounding the city were being administered as the Soviet occupation zone. He joined the Free German Youth ("Freie Deutsche Jugend" / FDJ), becoming a district secretary for what was in effect the youth wing of the ruling party in what was relaunched, in October of that year, as the German Democratic Republic, a new kind of one-party dictatorship. The next year Hass transferred to Berlin's Humboldt University and embarked on a degree course in History. After a year, however, in 1951 he was recommended for a transfer abroad. For five years he studied History at the Zhdanov University in Leningrad (as the Saint Petersburg State University was then known), and it was from Leningrad that he emerged in 1956 with a History Degree.

Example Output:
b