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: How long did the Napoleonic Wars last? Passage:Promoted to commander on 7 September 1795, West became commanding officer of the sloop HMS Diligence on the West Indies Station in December 1795. He was promoted to captain on 15 November 1796 and went on to be commanding officer of the sixth-rate HMS Tourterelle also on the West Indies Station. He became commanding officer of the third-rate HMS Utrecht at Chatham in March 1801 and commanding officer of the third-rate HMS Excellent in January 1807. In HMS Excellent he served off the coast of Catalonia and landed with a naval brigade with orders to help defend Rosas which was under attack from some 5,000 French troops in an action in November 1808 during the Napoleonic Wars. He took 250 of his ship's men and rescued a group migueletes (Catalan mercenaries) who were are risk of losing their lives, but not before having his own horse shot out from under him.

Example Output: b

Example Input: Question: Did Melville's wife die before his father? Passage:He was born in Edinburgh on 14 March 1771, the only son of Henry Dundas, 1st Viscount Melville, and his first wife, the former Elizabeth Rannie (17511843). Educated at the Royal High School, Edinburgh, he went in 1786 with his tutor John Bruce on a continental tour and enrolled at Gottingen University. He studied afterwards at the University of Edinburgh and at Emmanuel College, Cambridge, and was admitted at Lincoln's Inn in 1788. After a successful attempt at law he became his father's private secretary from 1794, though he was brought in as MP for Hastings in 1794, and then Rye in 1796. The same year, on 29 August, he married an heiress, Anne Saunders (died 10 Sept 1841), and took her name beside his own. They had four sons and two daughters; their eldest son, Henry Dundas, later third Viscount Melville, became an army officer while their second son, Richard Saunders Dundas, became First Naval Lord.

Example Output: b

Example Input: Question: Who wrote the letters that stated Nubian fighting men were sought after by kingdoms in Southwest Asia? Passage:During the Middle Kingdom military sophistication and strength continued to expand. Well-organized expeditions into Nubia were conducted, and a number of fortresses were built to control Nubian territory, such as the works at Buhen. Deep ditches surrounded some of these fortifications, with walls up to 24 feet thick, creating strong bases against rebellion or invasion. Recruiting quotas were assigned on a regional basis and designated scribes drafted soldiers as needed for the armies of the state. Striking forces were still primarily infantry-based, and tactics did not change drastically from previous eras. A key role in the strengthening of Egyptian forces was played by infantrymen from Nubia, both as spearmen and archers. Parts of Nubia were renowned for such fighting men, and indeed a part of the Nubian territory was called Ta-Seti or Land of the Bow by the Egyptians. The Egyptians and Nubians were ethnically the closest in the region, frequently exchanging people, genes, resources and culture over several centuries, and occasionally engaging one another in military conflict. Nubian fighting men were also sought as mercenaries by various kingdoms of Southwest Asia, according to the Amarna letters.

Example Output:
b