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 blue fire hydrant painted on the bottom of it'. Find frequency of the letter 'h'

Answer: 2


Question: Sentence: 'there are two men sitting on a couch playing video games'. Find frequency of the letter 'v'

Answer: 1


Question: Sentence: 'a silver toilet and some toilet paper and a green switch'. Find frequency of the letter 'i'

Answer:
4