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.

Input: Consider Input: Question: In what year was the commander in chief who sent Elles to investigate the first tanks born? Passage:In August 1915, after recovering from his injuries, Elles was one of three officers specially selected by General Sir William Robertson, soon to be Chief of the Imperial General Staff (CIGS), the professional head of the British Army, to liaise with troops at the front and pass the information directly to the British General Headquarters (GHQ). In January 1916, as a General Staff Officer (GSO), Elles was sent by General Sir Douglas Haig, the Commander-in-Chief (C-in-C) of the BEF on the Western Front, to investigate the first tanks or "caterpillars" being built in England. He attended the first trials of "Mother" and reported back to Haig on its success. During the summer of 1916, he was tasked to report back from the Somme, where the tanks were first used. Elles was appointed to head the Heavy Branch (the first tank units) of the Machine Gun Corps in France on 29 September 1916, with the temporary rank of colonel. His responsibilities included its advanced training and tactical employment. He also commanded the large central depot and workshops established near Bermicourt.

Output: b

Input: Consider Input: Question: How many schools are in the conference where Price came in sixth in the 800 m at the indoor championship? Passage:Price was given the Wayne Basler women's athletic scholarship award to attend the University of Tennessee and study journalism and electronic media. She began competing for the Tennessee Lady Volunteers cross country running and track and field teams. She came sixth in the Southeastern Conference (SEC) indoor championship in the 800m, then managed third place in the event at the SEC Outdoor championship, running a season's best of 2:03.30 minutes. She achieved a world indoor record for the distance medley relay at the 2009 NCAA Women's Indoor Track and Field Championship, winning the title with a time of 10:50.98 minutes with Phoebe Wright, Brittany Jones and Sarah Bowman. More relay world records came at the Penn Relays in April. Price, Wright and Bowman again teamed up to set an American record of 8:17.91 minutes in the 4800-meter relay with Kimarra McDonald and ran with Rolanda Bell to claim the 4 1500 metres relay world best with 17:08.34 minutes. The former team also won the distance medley relay title at the meet. At the NCAA Women's Outdoor Track and Field Championship she came eleventh in the 800m. She claimed the American junior (under-20) title and went on to win a silver medal behind Cuba's Rose Mary Almanza at the 2009 Pan American Junior Athletics Championships.

Output: b

Input: Consider Input: Question: Which historical figures did John Cranch paint for the British Institution? Passage:John Cranch (17511821), painter, born at Kingsbridge, Devonshire, 12 Oct. 1751, taught himself as a boy drawing, writing, and music, and while a clerk at Axminster also received instruction from a Roman Catholic priest. Inheriting some money, he came to London and painted portraits and historical pictures. He failed, however, to get a place on the walls of the Royal Academy, but was more successful at the Society of Artists, to which he contributed Burning of the Albion Mills, and at the British Institution, to which he contributed eight pictures in 1808. His best picture was The Death of Chatterton, now in the possession of Sir James Winter Lake, bart., who also owns a portrait of Cranch, which was engraved by John Thomas Smith. He is said to have excelled in "poker-pictures", and to have been befriended by Sir Joshua Reynolds. Reynolds in his youth had received valuable assistance from a Mr. and Mrs. Cranch of Plympton, Devonshire, who were doubtless relatives of John Cranch. He was elected a Foreign Honorary Member of the American Academy of Arts and Sciences in 1797 and a member of the American Antiquarian Society in 1818. After residing many years at Bath, Cranch died there in his seventieth year in February 1821. He published two worksOn the Economy of Testaments (1794), and Inducements to promote the Fine Arts of Great Britain by exciting Native Genius to independent Effort and original Design (1811). There is a picture by him in the South Kensington Museum.
Output: a