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: 'one man grabbing another at a table while laughing'. Find frequency of the letter 'n'

Answer: 5


Question: Sentence: 'a couple of men standing inside of a liquor store'. Find frequency of the letter 'p'

Answer: 1


Question: Sentence: 'a brown bear standing on top of a rock'. Find frequency of the letter 'b'

Answer:
2