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: Were the Oz books the only books L. Frank Baum ever wrote? Passage:The Land of Ev is a fictional country in the Oz books of L. Frank Baum and his successors. Its exact location is unclear between text and maps. The Road to Oz states that Ev is to the north of the Land of Oz, and in Ozma of Oz, Princess Ozma of Oz and her procession enter the Munchkin Country and meet the King of the Munchkins upon leaving the palace at Evna, the capital city. Subsequent books place Ev nearer to the Winkie Country, and the map on the endpapers of Tik-Tok of Oz shows the Munchkin Country as having no northern border with the desert that surrounds Oz, as a thin strip of the Gillikin Country extends even farther east than most of the Munchkin Country. This map depicts Ev as a small country to the northwest (the compass rose is reversed) of Oz, with the Dominions of the Nome King as a separate area. James E. Haff and Dick Martin's map, following the text, place the Nome Kingdom under an Ev that takes up the entire portion allotted to the Nome King's dominions on Baum's map.

Example Output: a

Example Input: Question: What other album covers did Storm Thorgerson depict? Passage:The record builds on ideas explored in Pink Floyd's earlier recordings and performances, while omitting the extended instrumentals that characterised their earlier work. A concept album, its themes explore conflict, greed, time, death, and mental illness, the latter partly inspired by the deteriorating health of founding member Syd Barrett, who departed the group in 1968. The group used recording techniques such as multitrack recording, tape loops, and analogue synthesisers. Snippets from interviews with the band's road crew, as well as philosophical quotations, were also used. Engineer Alan Parsons was responsible for many sonic aspects and the recruitment of singer Clare Torry, who appears on "The Great Gig in the Sky". The sleeve, which depicts a prism spectrum, was designed by Storm Thorgerson, following keyboardist Richard Wright's request for a "simple and bold" design, representing the band's lighting and the record's themes. The album was promoted with two singles: "Money" and "Us and Them".

Example Output: b

Example Input: Question: Where did the person who Martin was a law clerk for in 1961 earn their law degree? Passage:Born in Brooklyn, New York, Martin received a Bachelor of Arts degree from Manhattan College in 1957 and a Bachelor of Laws from Columbia Law School in 1961. He was a law clerk for Judge Leonard P. Moore of the United States Court of Appeals for the Second Circuit from 1961 to 1962. He was an Assistant United States Attorney of the Southern District of New York from 1962 to 1966. He was in private practice in Nyack, New York from 1966 to 1967. He was an Assistant to the Solicitor General of the United States from 1967 to 1969. He was in private practice in New York City from 1969 to 1980. He was the United States Attorney for the Southern District of New York from 1980 to 1983. He was in private practice in New York City from 1983 to 1990.

Example Output:
b