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 large group of motorcycles parked along a street'. Find frequency of the letter 'a'

Answer: 5

Question: Sentence: 'hotel towels with sunglasses perched and hotel business cards and catalog'. Find frequency of the letter 'o'

Answer: 4

Question: Sentence: 'a man dressed in a banana suit holding a banana'. Find frequency of the letter 'n'

Answer:
7