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: 'salad and vegetables with me on top of plate'. Find frequency of the letter 'o'

Answer: 3


Question: Sentence: 'apples, pears, and oranges are piled up for sale'. Find frequency of the letter 'a'

Answer: 6


Question: Sentence: 'a man in business attire walking down the street'. Find frequency of the letter 'n'

Answer:
5