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 is the maximum length of the species that is known to prey on the crossback stingaree? Passage:The broadnose sevengill shark (Notorynchus cepedianus) is known to prey on the crossback stingaree. When threatened, this ray raises its tail warningly above its body in a scorpion-like fashion. Parasites documented from this species include a tapeworm in the genus Acanthobothrium, and the monogenean Calicotyle urolophi. Like other stingrays, the crossback stingaree is aplacental viviparous: when the developing embryos exhaust their supply of yolk, their mother provisions them with nutrient-rich histotroph ("uterine milk") through specialized extensions of the uterine epithelium called "trophonemata". Females produce litters of 1–4 pups every other year. Embryonic development proceeds rapidly over a six-month period, though the total gestation period may be much longer if there is a period of dormancy for the eggs after fertilization, as has been reported in other stingarees. Off Tasmania, large estuaries such as at the mouth of the River Derwent serve as nursery areas.

Example Output: b

Example Input: Question: How old was Fatma Betül Sayan Kaya at the time of the 2017 Dutch–Turkish diplomatic incident? Passage:At the time, the Turkish Minister of Family and Social Policies, Fatma Betül Sayan Kaya, was touring Germany. A visit to the Dutch town of Hengelo, close to the German border, had already been scheduled. On 11 March, the Dutch General Intelligence and Security Service received information that Kaya would try to reach Rotterdam by car. She could freely cross the border because of the Schengen Treaty. A crisis centre was established on the twenty-third floor of the Rotterdam World Port Center to coordinate police actions. Earlier, the Turkish consul in Rotterdam had indicated to the Mayor of Rotterdam, Ahmed Aboutaleb, that there were no plans for such a visit. It now proved impossible to contact the consul, which gave Aboutaleb the conviction that the consul knew of Kaya's attempt. A motorcade was intercepted but the car with the minister managed to drive away. It reached a small yard at the rear of the Turkish consulate. The Dutch police stopped Betül Sayan Kaya's entourage just metres from the Turkish consulate building. About twenty police officers, forming a special forces unit, the Dienst Speciale Interventies, masked and equipped with body armour and automatic weapons, arrested ten members of Kaya's bodyguard, on suspicion of illegally carrying firearms. A German source had indicated they had obtained a German weapons permit. No arms were discovered. Two other men were also arrested, who later proved to be the Deventer Turkish consul and the chargé d'affaires of the Turkish embassy. They in principle enjoyed diplomatic immunity. The twelve arrested men were detained for two hours and their passports were seized. A stand-off ensued for several hours in which the Turkish minister refused to leave the car. Just after midnight, a special heavy tow truck, a lift flatbed, was driven into the yard and prepared to vertically hoist the 3.5 tonne car onto the flatbed, with the minister still in it, to transport her back to Germany. The minister now left the car and demanded entrance to the consulate invoking the Vienna Convention on Diplomatic Relations. The Dutch police had orders to arrest the minister if necessary. Ultimately, she gave in to the police demands to leave the country. At the time, many news sources assumed that she had been declared persona non grata. She was, loudly protesting, taken to another car, a black armoured Mercedes, by masked Dutch police officers who accompanied her to a police station at Nijmegen near the Dutch–German border. Her passport was seized. She was not allowed to leave the station for one and a half hours, while being reunited with the ten bodyguards. She returned to Germany under German escort. Sporadic rioting occurred among the about a thousand pro-Erdoğan protesters who had come to the Turkish consulate. They were met by Dutch riot police, who arrested twelve people for violent assault and not following police instructions. Kaya's passport was returned on 12 March, 18:00, to the Turkish consul. In April 2017, Kaya's lawyer said they would file a complaint against the Dutch government at court claiming that her expulsion from the Netherlands was illegal because she was not given a written statement of the reasons for the expulsion. However, on 2 May the case was dropped when it transpired that Kaya had never been formally declared persona non grata and that from a judicial point of view she had left the Netherlands voluntarily.

Example Output: b

Example Input: Question: When did the person who  Louis Brière de l'Isle replaced as general-in-chief first achieve  that rank? Passage:In September 1884, shortly after the outbreak of the Sino-French War (August 1884 to April 1885), he replaced General Charles-Théodore Millot as general-in-chief of the Tonkin Expeditionary Corps. In October 1884 he defeated a major Chinese invasion of the Tonkin Delta in the Kep Campaign. In January 1885 he was promoted divisional general (général de division). In February 1885 he commanded both brigades of the Tonkin Expeditionary Corps in the Lạng Sơn Campaign, defeating China's Guangxi Army and capturing the strategically important border town of Lạng Sơn. This campaign, which required months of patient preparation, was perhaps the greatest military achievement of his career. Immediately after the capture of Lạng Sơn he returned to Hanoi with Lieutenant-Colonel Laurent Giovanninelli's 1st Brigade to relieve the Siege of Tuyên Quang, leaving General François de Négrier's 2nd Brigade at Lạng Sơn. After defeating Liu Yongfu's Black Flag Army at the Battle of Hòa Mộc (2 March 1885), Brière de l'Isle entered the beleaguered French post in triumph on 3 March. These battlefield successes underscored the failure of concurrent diplomatic attempts to resolve the conflict between France and China, and evoked a heartfelt tribute from the French premier Jules Ferry: 'It seems that the only negotiator China will respect is General Brière de l'Isle.'

Example Output:
a