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: Was Robert Dudley alive the year Fowler camped at Tilbury? Passage:Fowler joined the household of Robert Dudley, Earl of Leicester, serving as his steward. In November 1581 John Selby of Twizel sent Fowler and the Earl of Leicester news of Scottish politics from Berwick. Selby asked Fowler, who was then living in Aldersgate Street in London, to pass his compliments to Roger Aston, an English courtier of James VI. When John Colville sent news of the Gowrie Regime to Walsingham in June 1583, he asked him to inform Leicester, but not tell Fowler details about Colonel Stewart, "for he will reveal it again." Fowler sent news of Francis Walsingham's mission to Scotland after the fall of the Ruthven Regime to the Earl of Shrewsbury on 10 August 1583 from Woodhouse in Nottinghamshire. He was at the camp at Tilbury in August 1588 with the Leicester during the crisis of the Armada.


b