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: 'two men sitting quietly on a park bench'. Find frequency of the letter 'a'

Answer: 2

Question: Sentence: 'there is a couch, bench, and entertainment shelf shown in the living room'. Find frequency of the letter 'i'

Answer:
5