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.

Example Input: Question: Which states aided the Latin Empire under the benner "Crusader States"? Passage:The NicaeanLatin wars were a series of wars between the Latin Empire and the Empire of Nicaea, starting with the dissolution of the Byzantine Empire by the Fourth Crusade in 1204. The Latin Empire was aided by other Crusader states established on Byzantine territory after the Fourth Crusade, as well as the Republic of Venice, while the Empire of Nicaea was assisted occasionally by the Second Bulgarian Empire, and sought the aid of Venice's rival, the Republic of Genoa. The conflict also involved the Greek state of Epirus, which also claimed the Byzantine inheritance and opposed Nicaean hegemony. The Nicaean reconquest of Constantinople in 1261 AD and the restoration of the Byzantine Empire under the Palaiologos dynasty did not end the conflict, as the Byzantines launched on and off efforts to reconquer southern Greece (the Principality of Achaea and the Duchy of Athens) and the Aegean islands until the 15th century, while the Latin powers, led by the Angevin Kingdom of Naples, tried to restore the Latin Empire and launched attacks on the Byzantine Empire.

Example Output: b

Example Input: Question: Was the waverly route entirely within the Scottish borders? Passage:The Waverley Route spawned a series of branches serving the towns and villages in the Scottish Borders: a branch line from Kelso Junction near reached Kelso where it met an NER branch from . The NBR Chairman, Richard Hodgson, sought to link the Waverley Route with the Edinburgh-Berwick line between Ravenswood Junction, north of St Boswells, and ; the branch between Reston and Duns had been completed in 1849 and a western section to St Boswells was promoted as the Berwickshire Railway. It opened throughout on 2 October 1865. Other towns to be connected were Jedburgh by the independent Jedburgh Railway which was inaugurated on 17 July 1856 and worked by the NBR, and Selkirk via the Selkirk and Galashiels Railway, also opened in 1856 and operated by the NBR, while Langholm received a branch from , and Gretna one from . One of the last branches to be constructed was the Lauder Light Railway in 1901; this replaced an omnibus subsidised by the NBR providing access from the town of Lauder, famed for its trout, and connecting with trains at .

Example Output: a

Example Input: Question: As the Pike enters Bellmawr, which of the two routes whose exits it interchanges with is longest? Passage:The Black Horse Pike heads south from US130 in Camden as a four-lane, divided highway comprising Route168, which continues north of US130 on Mt. Ephraim Avenue. It heads south and interchanges Route76C, which heads west and provides access to Interstate 76 (I-76) and the Walt Whitman Bridge. It passes through Haddon Township with many jughandles at intersections. It then passes through Mt. Ephraim, where the road was restriped in the late 1990s reducing it from four lanes to two, and enters Bellmawr, where it interchanges with exit 28 of I-295 and exit 3 of the New Jersey Turnpike (NJTP). It then enters Runnemede, where it crosses Route41 and County Route 544 (CR544). It then heads into Gloucester Township and interchanges with Route42. It continues south, passing through Blackwood, where it intersects CR534, and then widens back into a four-lane, divided highway. It then heads toward the southern terminus of the NorthSouth Freeway (Route 42) and the western terminus of the Atlantic City Expressway, where Route 168 ends and the Black Horse Pike becomes Route 42.

Example Output:
a