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: What age was Hans Asperger when he invented the term Autistic psychopathy? Passage:Michael Fitzgerald, a professor of child and adolescent psychiatry, published a cornucopia of pathographies of outstanding historical personalities, mostly stating that they had Asperger syndrome, which is on the autism spectrum. In his 2004 published anthology Autism and creativity, he classified Hitler as an "autistic psychopath". Autistic psychopathy is a term that the Austrian physician Hans Asperger had coined in 1944 in order to label the clinical picture that was later named after him: Asperger syndrome, which has nothing to do with psychopathy in the sense of an antisocial personality disorder. Fitzgerald appraised many of Hitler's publicly known traits as autistic, particularly his various obsessions, his lifeless gaze, his social awkwardness, his lack of personal friendships, and his tendency toward monologue-like speeches, which, according to Fitzgerald, resulted from an inability to have real conversations.

Example Output: b

Example Input: Question: Of the three presumed first members, which of the small states was the smallest? Passage:An ancient Amphictyony, probably the earliest centered on the cult of Demeter at Anthele or Anthela (Ἀνθήλη), which lay on the coast of Malis south of Thessaly. This was the locality of Thermopylae. Thus those living near the temple were called Amphictyones ("dwellers-round"). The immediate "dwellers-round", presumably the first members, were the small states Aeniania, Malis and Doris. Certainly Thessaly did have a share including the states of the Boeotian tribes who lived around Thessaly (perioikoi, "living around"). Boeotia and Phocis, the most remote of them may have joined during or after the "First Sacred War", which led to the defeat of the old priesthood, and to a new control of the prosperity of the oracle at Delphi. As a result of the war, the Anthelan body was known henceforth as the Delphic Amphictyony and became the official overseer and military defender of the Delphic cult. The name of Hellenes, which was originally the name of a Boeotian tribe in Thessalic Phthia, (Achaea Phthiotis) may likely be related to the members of that league and may have been broadened to refer to all Greeks when the myth of their patriarch Hellen was invented.

Example Output: a

Example Input: Question: Which president saw the establishment of the recreation area that contains the lower of the San Juan River? Passage:From there it flows west through the Navajo Nation, turning northwest near Shiprock and its namesake monolith, crossing very briefly back into southwest Colorado (within half a mile (0.8 km) of the Four Corners quadripoint) before entering southeastern Utah. West of Bluff, Utah the river slices through the Comb Ridge and enters a series of rugged winding canyons, often over in depth. The lower of the San Juan River, in a remote portion of the Glen Canyon National Recreation Area, are flooded by Lake Powell, which is formed by Glen Canyon Dam on the Colorado River. The San Juan joins the Colorado in San Juan County, Utah at a point about to the north of Navajo Mountain and northeast of Page, Arizona.

Example Output:
a