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 years was Isabella Machell's father a Member of Parliament? Passage:The 8th Viscount Irvine was the sixth son of Arthur Ingram, 3rd Viscount of Irvine (died 1702), of Temple Newsam, Yorkshire, and his wife Isabella Machell, daughter of John Machell, Member of Parliament for Horsham, of Hills (Horsham), Sussex, and Helen Warmestry. Baptized at Whitkirk, Yorkshire, he matriculated from Oriel College, Oxford on 7 June 1711, at the age of 17, and graduated BA in 1714. He obtained a Fellowship in the same college in 1716, took MA in 1717, and was ordained deacon at Christ Church Cathedral, Oxford by Bishop John Potter on 21 December 1718. At Westminster St James he was ordained priest on 8 February following, by Bishop Talbot of Salisbury, and three days later was instituted Rector of Crudwell, Wiltshire, a living which he held until his death. In October 1723 he was also instituted to the perpetual vicarage of Hankerton, Wiltshire. (Both Crudwell and Hankerton are parishes near Malmesbury.) He was appointed chaplain of the House of Commons in 1724, and was installed canon of Windsor and Prebendary of Westminster.

Example Output: a

Example Input: Question: When did the group that Lewis made his opera debut with first established? Passage:William Lewis was educated at the University of Colorado, Texas Christian University and New York University. He began his career as a writer and an athlete before deciding to pursue a career in opera. He began his voice training under Karl Kritz and Arthur Faguy Coté in Fort Worth, followed by studies with Susan Seton and Hulda and Luigi Rossini in New York. He made his professional opera debut in 1953 with Fort Worth Opera as Rinuccio in Puccini's Gianni Schicchi. Two years later he won the Metropolitan Opera's Audition of the Air competition (precursor to the National Council Auditions). Lewis made his debut at the Metropolitan Opera as Narraboth in Salome on March 1, 1958 and subsequently sang in 234 performances in his 35 years with the company. In 1975 he made his debut at San Francisco Opera as Steuermann and Erik in The Flying Dutchman and has sung in sixteen different productions with the company in subsequent seasons. In 1981 he made his debut at the Salzburg Festival in the title role of Offenbach's The Tales of Hoffmann, returning there for the following four years in such roles as Arbace in Idomeneo and the First Geharnischter in The Magic Flute. In 1990 he made his debut at the Teatro Lirico in the world premiere of Azio Corghi's Blimunda.

Example Output: b

Example Input: Question: Did Bess Truman live longer than her husband Harry S. Truman? Passage:Ferrell's biography follows the course of Truman's life from his birth in 1884 in Lamar, Missouri to his 1972 death and burial at the Truman Library in Independence. The first five chapters examine his service as a captain in World War I, his pre-politics careers in banking, farming, and a failed run as a haberdasher which ended in bankruptcy, and marriage to Bess Truman in 1919. Chapters six to eight look at his early political career, launched by Kansas City boss Tom Pendergast, beginning with his election as a county judge in 1922, then senator in 1934, and in 1944, vice president to Franklin Roosevelt, in a behind-the-scenes compromise Ferrell calls "the most extraordinary political arrangement of the present century"—Democratic Party leaders could see that the extremely ill Roosevelt was unlikely to survive his fourth term in office, and had to convince him to drop then-VP Henry Wallace in favor of Truman, who was felt to be a more "reliable" man. Truman ascended to the presidency upon Roosevelt's death in 1945, and this period in Truman's life is covered in chapters nine to 17—the majority of the book—including Truman's decision to detonate atomic weapons on Hiroshima and Nagasaki to force an end to World War Two, his unexpectedly successful reelection in 1948, his civil-rights initiatives, and his administration's handling of foreign-policy issues, most prominently the Korean War.

Example Output:
b