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.

Input: Consider Input: Question: What profession did Fritz Haber work in the year Barschall received his Ph.D? Passage:Barschall was born as Heinrich Hermann Barschall in Berlin, Germany; his father was a patent attorney who had received a Ph.D. in chemistry after studying with Nobel Laureates Emil Fischer and Fritz Haber. After beginning study in several universities in Germany, he emigrated to the United States in 1937 during the early Holocaust period; though raised as a Lutheran, he had some Jewish ancestry. He received his Ph.D. from Princeton University in 1940 under the direction of Rudolf Ladenburg; he also worked closely with John A. Wheeler. After a suggestion by Niels Bohr, he carried out in only a few days with fellow graduate student Morton H. Kanner the first demonstration of fission by fast neutrons and thorium and uranium. His thesis was on the interaction of fast neutrons with helium. In a paper with John A. Wheeler he reported the discovery of spin-orbit coupling in neutron scattering.


Output: b


Input: Consider Input: Question: How many countries border the body of water on the coast of which Hommaire coordinated the construction of a lighthouse? Passage:After attending school in Altkirch and Dijon, Hommaire graduated as an engineer at the École des Mines in Saint-Étienne in 1833. There he met Adèle Hériot whom he married in 1834. In October 1835, he went Turkey where he coordinated the construction of a suspension bridge in Constantinople and a lighthouse on the Black Sea coast. In 1838, he arrived in southern Russia where he performed ethnographical research and geographical surveys. After he discovered coal resources along the Dnieper River, Czar Nicholas I awarded him the St Vladimir Cross. In 1842, while working on mining and road-building projects in Moldavia, he fell ill and returned to France. The following year he became a member of the Société de Géographie and the Société géologique and published a number of scientific papers. In 1844 the Société de Géographie awarded him their Gold Medal .


Output: b


Input: Consider Input: Question: Of the states that had settlers help establish Tennessee Colony, which is the oldest? 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.



Output: b