Definition: 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: 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.'


a