Instructions: 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: How long had the HMS St Jean d'Acre existed prior to when Prince Victor of Hohenlohe-Langenburg served on it? Passage:Victor (sometimes spelled Viktor) became an officer in the Royal Navy in 1848 and was promoted to Lieutenant in 1854. As a Lieutenant, he served on the first-rate HMS St Jean d'Acre in the Mediterranean under Captain Henry Keppel in 1855; commanded the gunboat HMS Traveller for a few months in 1856 after her launch until she was paid off; served again under Keppel again on the fourth-rate HMS Raleigh in the East Indies and China, until she was wrecked near Macau in 1857. He was recommended for the Victoria Cross for his service in China in 1856. He was promoted to Commander in 1857, and commanded the first-rate sloop HMS Scourge in the Mediterranean. Promoted to Captain in 1859, he took command of the 21-gun corvette HMS Racoon from commissioning in 1863 until 1866, during which time Queen Victoria's second son, Alfred, Duke of Edinburgh (1844–1900) served on board as a lieutenant.

Output:
b