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: What city did Stevens complete a Ph.D. in? Passage:In 1980, Stevens joined the Army under their split option training program and conducted basic training at Fort Dix, New Jersey and advanced individual training at Fort Sam Houston, Texas. While engaged in his military service, Stevens entered the University of Southern Maine in the Computer Science program in 1981. However, an enthusiastic professor (John Ricci) converted him to the study of Chemistry. He spent two summers working as an intern at the Brookhaven National Laboratory in Long Island with Professor Ricci, and Drs. Thomas Koetzle and Dick McMullan, where he first learned how to determine the molecular structure of compounds by X-ray and neutron diffraction. While there he also met a University of Southern California research team led by Dr. Robert Bau; after he obtained a Bachelor of Science degree in Chemistry at USM, he entered the University of Southern California in pursuit of a Doctor of Philosophy degree in Chemistry working with Professor Robert Bau and Nobel Laureate Professor, George Olah. He completed his Ph.D. in 26 months, graduating in 1988.

Example Output: b

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: How much money did The Cars' third album make? Passage:Their third album, Panorama, was released in 1980. Although it peaked at number 5 on the Billboard 200 and has been certified Platinum, it was less commercially successful than its predecessors. A single, "Touch and Go", peaked at number 37 on the Billboard Hot 100. Their next album, Shake It Up (1981), fared better commercially, going platinum by the end of the year and spawning their first Top 10 single with its title track. 1984's Heartbeat City was the band's most successful, hitting number 3 on the Billboard 200. Its lead single, "You Might Think", reached number 7 in the US, with three more singles: "Magic", "Drive", and "Hello Again" reaching number 12, 3, and 20, respectively on the Billboard Hot 100. Their Greatest Hits album, released later that year, contained the singles "Tonight She Comes" and a remixed version of "I'm Not the One", and has gone 6x platinum. Their final album before their breakup, Door to Door (1987), spawned the single "You Are the Girl" which reached number 17 on the Hot 100; it was their last Top 40 hit as a band.

Example Output:
b