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: 'town clocks affixed to a tall, brick building'. Find frequency of the letter 'r'

Answer: 1

Question: Sentence: 'people waiting on a train platform in a wooded area'. Find frequency of the letter 'p'

Answer: 3

Question: Sentence: 'a man in a suit with his arms crossed looks out over a rail'. Find frequency of the letter 'i'

Answer:
5