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.

Ex Input:
Question: What was the population of the Hejaz region during The Battle of Badr? Passage:The Battle of Badr (), fought on Tuesday, 13 March 624 CE (17 Ramadan, 2 AH in the Islamic calendar) in the Hejaz region of western Arabia (present-day Saudi Arabia), was a key battle in the early days of Islam and a turning point in Muhammad's struggle with his opponents among the Quraish in Mecca. The battle has been passed down in Islamic history as a decisive victory attributable to divine intervention, or by secular sources to the strategic genius of Muhammad. It is one of the few battles specifically mentioned in the Quran. All knowledge of the battle at Badr comes from traditional Islamic accounts, both hadiths and biographies of Muhammad, recorded in written form some time after the battle. There is little evidence outside of these of the battle. There are no descriptions of the battle prior to the 9th century.

Ex Output:
b

Ex Input:
Question: Who was the elder of the two men De La Pole escaped from when he fled to France? Passage:He was appointed Chancellor in 1383, and created Earl of Suffolk in 1385, the first of his family to hold any such title (the earldom had become extinct in 1382 on the death of William de Ufford). However, in the late 1380s his fortunes radically altered, in step with those of the king. During the Wonderful Parliament of 1386 he was impeached on charges of embezzlement and negligence, a victim of increasing tensions between Parliament and Richard. He was the first official in English history to be removed from office by the process of impeachment. Even after this disgrace, he remained in royal favour, although soon fell foul of the Lords Appellant. He was one of a number of Richard's associates accused of treason by the Appellants in November 1387. After the Appellants' victory at Radcot Bridge (December 1387) and before the so-called Merciless Parliament met in February 1388, De La Pole shrewdly fled to Paris, thus escaping the fate of Sir Nicholas Brembre and Chief Justice Robert Tresilian. He remained in France for the remainder of his life. Sentenced in his absence, his title and estates were stripped from him.

Ex Output:
a

Ex Input:
Question: Of the schools Thomas Canning taught at, which is the oldest? Passage:After receiving his degree from Eastman, Canning taught music theory and composition at Morningside College (19361941) and Indiana University of Pennsylvania (19451946). In 1946, he took a position with The Royal Conservatory of Music at the University of Toronto, teaching music theory in the RCM's newly created MBac program for training secondary and elementary school music teachers. Canning was appointed Assistant Professor of Theory at Eastman in 1947 and taught there until 1961, when he left for a year to serve at the University of Hull as a Fulbright professor. In 1963 Canning was hired as an associate professor at the newly opened Creative Arts Center at West Virginia University, receiving promotion to full professor in 1967, retiring in 1977. Canning belonged to the American Composers Alliance, The Hymn Society of America, and Pi Kappa Lambda, and was an honorary member of Phi Mu Alpha Sinfonia.

Ex Output:
a