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: Is Carl Linnaeus older than the French zoologist who introduced the horned screamer in the genus Anhima? Passage:The horned screamer was described in 1766 by the Swedish naturalist Carl Linnaeus in the twelfth edition of his Systema Naturae. He introduced the binomial name Palamedea cornuta. The horned screamer is now the only species placed in the genus Anhima that was introduced by the French zoologist Mathurin Jacques Brisson in 1760. The specific epithet cornuta is the Latin word for "horned". The German naturalist Georg Marcgrave had used the Latin name Anhima in 1648 for the horned screamer in his Historia naturalis Brasiliae. The name was from the word for the bird in the Tupi language of South America.

Example Output: b

Example Input: Question: What is the largest city near the village that preserved the Waga name? Passage:The manor is recorded in the Domesday Book where it is listed as Holehale, one of the lands of Robert de Stafford. "In Ferncombe Hundred in Holehale (Ullenhall) 1 hide. Land for 15 ploughs. 17 villagers and 11 smallholders with 6 ploughs. Woodland ½ league long and 1 furlong wide. The value was and is £3 Waga held it." Waga, whose name is preserved in the nearby village of Wootton Wawen, was one of the witness's to Earl Leofric's, husband of Lady Godiva, foundation of the monastery at Coventry during the first year of the reign of Edward the Confessor (1042/3). His lands extended beyond those at Ullenhall, but, following the Conquest, Ullenhall was bestowed by the conqueror on Robert de Stafford, descended from the de Tonei family and who had fought stoutly with Duke William against King Harold. He made Stafford his principal seat, where he had a strong castle and assumed his surname from thence.

Example Output: a

Example Input: Question: How many children did the leader of the 18th Division during the 1939-40 Winter Offensive have? Passage:The 18th Division was resurrected in September 1937 as a square division as a part of general military build-up following the start of the Second Sino-Japanese War. As part of the IJA 10th Army under the overall command of the Japanese Central China Area Army it was deployed to the Chinese mainland, as an emergency reinforcement force to supplement the Japanese Shanghai Expeditionary Army in China after the Second Shanghai Incident. The Japanese 18th division subsequently participated in the Battle of Nanjing and the subsequent atrocities known as the Nanking Massacre. From September 1938, the division came under the control of the IJA 21st Army, and participated in the Canton Operation and the invasion and occupation of Guangdong Province under the command of Lieutenant General Seiichi Kuno. The division remained in China through the 1939–40 Winter Offensive under the command of Lieutenant General Harukichi Hyakutake.

Example Output:
a