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.

Q: Question: How long had Jeffrey Ullman been teaching at Stanford the year Mairson got his B.A.? Passage:Mairson received a B.A. in Mathematics from Yale University in 1978 and a Ph.D. in Computer Science from Stanford University in 1984 under the supervision of Jeffrey Ullman. His Ph.D. thesis, The Program Complexity of Searching a Table, won the Machtey Award at the 1983 IEEE Symposium on Foundations of Computer Science (FOCS). Mairson was a Postdoctoral researcher at INRIA Rocqencourt from 1984 to 1985, at Stanford University in 1985, and at the University of Oxford in 1986. He held a Visiting Professor position from 1999 to 2001 at Boston University. From 2005 to 2007, Mairson has served as the Chair of the Faculty Senate at Brandeis. He is currently an Associate Editor of the journal Logical Methods in Computer Science and Information and Computation, and sits on the editorial board of Higher-Order and Symbolic Computation.


A: b
****
Q: Question: What is the population of the city in which Jackson Plantation resides? Passage:Tennessee Colony was established in 1847 by settlers from Tennessee and Alabama, who named their settlement for one of their home states. The first settlers who settled in the community had the last names Shelton, Avant, Hank, and Seagler. The community's fertile soil and moist climate made it feasible to grow cotton, and several plantations were established, including the Jackson Plantation, which, at one time, was one of the largest plantations in East Texas. They were extremely successful. A post office was established at Tennessee Colony in 1852. Before the Civil War, as well as after, the community fell victim to racial tensions. Two white men from Mississippi named Cable and Wyrick were accused of plotting a slave uprising in 1860, in which they encouraged slaves to kill most of the community's white residents by poisoning the water supply in the settlement. They were tried and hanged soon after. The nearby city of Palestine had the community's first railroad built there. As of 1884 Tennessee Colony boasted a population of 200 and three churches, a steam-powered gristmill, and a cotton gin. As the community's businesses moved to the nearby city of Palestine, the community's population plummeted over the next few decades. There were a few grocers and cotton gins in the area, and it eventually received a telephone connection. It functioned as a small cultural port in the 20th century. The population declined to just 100 people by 1914, rose again to 300 in 1927, but again declined during the 1930s. In 1941 there were 150 people in Tennessee Colony. A total of 21,000 acres of land was purchased just southwest of the settlement by the Texas Department of Corrections in 1965, and the first medium security prison facility named the Coffield Unit was built in the community and held approximately 2,000 prisoners. It reached its population zenith of 400 by that year. Then the Beto Unit, the community's second prison, was finished in 1984. There were factories built for fabricating metal, as well as building concrete blocks and highway signs, in these prison facilities. It also had thriving agricultural and livestock operations. It had a steady population of 120 from the 1970s to 1990. It had a population of 300 in 2000. It currently has two historical markers, with one honoring the community, and the other commemorating the community's cemetery.


A: b
****
Q: Question: Who was the very first team to ever be presented with the Sam Maguire? Passage:In the 1998 championship, led by Mayo-born manager John O'Mahony, Galway won their first round encounter with Mayo, before overcoming Leitrim by 1-16 to 0-05 in the semi-final. The first final ended as a draw, 11 points apiece with Roscommon, but Galway won the replay in Hyde Park. In the semis, Galway came up against Ulster champions Derry, and won by 0-16 to 1-09. In the final the team faced a Kildare team that had just beaten the previous year's champions, Kerry, and were coached by 8 time All-Ireland winning manager Mick O'Dwyer. Galway went into the final as underdogs, but outstanding performances from Ja Fallon and Michael Donnellan in that match, along with a superbly taken goal from a young Padraig Joyce, helped Galway overcome the Lilywhites by 1-14 to 1-10. Captain Ray Silke lifted the Sam Maguire, and Galway became the first Connacht team in 32 years to win an All-Ireland title.


A:
b
****