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 team did the New Orleans Saints beat in the 2006 NFC playoffs? Passage:The Buccaneers played their home opener against the 2006 NFC South champion New Orleans Saints. After scoring only 6 points the week before, the Buccaneers dominated the Saints, on offense and defense, at one point taking a 280 lead. Early in the first quarter, Barrett Ruud recovered a Deuce McAllister fumble, which set up a Tampa Bay scoring drive. Carnell Williams, who was back in the lineup after injuring his ribs the week before, capped off the drive with a one-yard touchdown run. Early in the second quarter, Joey Galloway scored on a 69-yard catch and run from quarterback Jeff Garcia. Inside the two-minute warning, Garcia and Galloway scored again, this time with a 24-yard touchdown, to take a 210 halftime lead. Halfway through the third quarter, Cato June intercepted a pass from Drew Brees. Two plays later, Garcia and Galloway connected for yet another big play, a 41-yard completion to the New Orleans 9-yard line. Williams capped off the drive with his second 1-yard touchdown. New Orleans' first score came with a 1-yard touchdown run by Mike Karney, aided by a 58-yard catch by Phillip Buchanon moments earlier. The Buccaneers improved to 11, into a tie for the NFC South lead. New Orleans fell to 02.

Example Output: b

Example Input: Question: What was the population of Rome during the last year that Lucius Sextius Lateranus served as a tribune of the plebs? Passage:The gens Sextia was a plebeian family at Rome, from the time of the early Republic and continuing into imperial times. The most famous member of the gens was Lucius Sextius Lateranus, who as tribune of the plebs from 376 to 367 BC, prevented the election of the annual magistrates, until the passage of the lex Licinia Sextia, otherwise known as the "Licinian Rogations," in the latter year. This law, brought forward by Sextius and his colleague, Gaius Licinius Calvus, opened the consulship to the plebeians, and in the following year Sextius was elected the first plebeian consul. Despite the antiquity of the family, only one other member obtained the consulship during the time of the Republic. Their name occurs more often in the consular fasti under the Empire.

Example Output: a

Example Input: Question: What country is the River Rhine located in? Passage:The station is situated at the northern end of the relatively straight Duisburg to Dusseldorf railway line which has to cope with one of the highest daily loads in continental Europe. This line is slated to be widened to six tracks in the near future. Currently it has fourand in some places fivetracks. Parallel to it to the east is the local line to Duisburg-Wedau, remnant of a relief line to Dusseldorf which only sees a local shuttle service today but is heavily used by freight trains (which usually do not run through the station but bypass it on a freight-only line two miles to the east). The third line from the south is the railway line to Krefeld and Monchengladbach. This crosses the River Rhine and then splits into the main line and a branch to Moers and Xanten at Rheinhausen. North of the station, seven tracks run to the River Ruhr crossing (which is a sight on the Route der Industriekultur (Route of industrial heritage) due to a maze of girder bridges) where a three track line split for Oberhausen and on to Antwerp and the other line runs to Dortmund via Gelsenkirchen. The four-tracked main line turns east and runs via Essen and Bochum to Dortmund.

Example Output:
b