In this task, you need to count the number of times the given letter appears in the given sentence.
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Question: Sentence: 'a man standing on a tennis court holding a racquet'. Find frequency of the letter 's'

Answer: 2


Question: Sentence: 'a man swinging a bat while playing baseball'. Find frequency of the letter 'm'

Answer: 1


Question: Sentence: 'a plate featuring steak with sauce, broccoli, and mushrooms'. Find frequency of the letter 's'

Answer:
4