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 man holding a baseball bat an playing baseball'. Find frequency of the letter 'l'

Answer: 6


Question: Sentence: 'a person standing operating a cell phone in a room'. Find frequency of the letter 'n'

Answer: 6


Question: Sentence: 'city two way street with cars lined up on both sides'. Find frequency of the letter 'h'

Answer:
2