In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.

Ex Input:
Question: Of the schools that Donegan attended, which is the oldest? Passage:Donegan was born on 13 July 1961 in Stirling, and educated at St Modan's High School in Stirling and at the University of Glasgow, where his musical career began. He was the bassist in The Bluebells, whose biggest hit was "Young at Heart", and Lloyd Cole and the Commotions. After the latter group split, Donegan became a journalist and an author. Between these roles, he worked as the House of Commons assistant to Brian Wilson MP. Whilst in that role, he was part of a one-off band called the Stop Its that recorded an anti-poll tax song of a similar name. The band also included David Hill, later press spokesman for Tony Blair. and Tim Luckhurst, who later became editor of The Scotsman newspaper, and is Professor of Journalism at the University of Kent. In the late 1980s, Donegan made a number of appearances with South London football team Belair Casuals FC. He is now a golf journalist for The Guardian, having previously worked at The Scotsman. He has held a post with the former publication since 2004, although he has been at the newspaper since 1994, as a general reporter and then as the Scotland correspondent from 1997 to 2004. During the 2010 Winter Olympics, Donegan gained notoriety for his overly critical reviews of the games. Journalists believed that his harsh reviews and similar critiques coming from the British media were made as an attempt to make the games look bad as the following Olympics would be held in London. In 2012, The Guardian made a tongue-in-cheek reference to the severe criticism of the prior Games by inviting a Canadian journalist to similarly critique the Summer Olympics in London as the 'worst ever'.

Ex Output:
b

Ex Input:
Question: When did the expedition that John Colter was apart of in 1807 begin? Passage:Europeans may have ventured into the northern sections of the state in the late 18th century. Most of the southern part of modern-day Wyoming was nominally claimed by Spain and Mexico until the 1830s, but they had no presence. John Colter, a member of the Lewis and Clark Expedition, was probably the first American to enter the region in 1807. His reports of thermal activity in the Yellowstone area were considered at the time to be fictional. Robert Stuart and a party of five men returning from Astoria, Oregon discovered South Pass in 1812. The route was later followed by the Oregon Trail. In 1850, Jim Bridger located what is now known as Bridger Pass, which was later used by both the Union Pacific Railroad in 1868, and in the 20th century by Interstate 80. Bridger also explored the Yellowstone region and like Colter, most of his reports on that region of the state were considered at the time to be tall tales. During the early 19th century, fur trappers known as mountain men flocked to the mountains of western Wyoming in search of beaver. In 1824, the first mountain man rendezvous was held in Wyoming. The gatherings continued annually until 1840, with the majority of them held within Wyoming territory.

Ex Output:
b

Ex Input:
Question: Which of the nearby counties of the "Tennessee Valley" has the largest population? Passage:According to the United States Census 2013 estimate, the combined statistical area has a population of 1,313,105. It is the 42nd largest population sub-region in the United States, and the largest population region in Alabama, constituting roughly 1/4 of the state's population. It is the largest population region in Central Alabama. The northern counties of the metropolitan area overlap North Alabama known locally as the "Tennessee Valley" making it the largest metropolitan area in that region as well. Nearby counties Tuscaloosa, Etowah, and Calhoun, while not officially a part of Greater Birmingham, contribute significantly to the region's economy. The Birmingham media market covers these counties as well. Birmingham is part of the Piedmont Atlantic Megaregion containing an estimated 19 million people, while many residents also consider themselves part of the Deep South. It is classified as Southeast by the U.S. Census and also falls in the geographic area of the Upland South due to its location at the southern terminus of the Appalachian foothills. The entire MSA and CSA are within the congressional Appalachian Regional Commission's definition of Appalachia.

Ex Output:
b