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 dilapidated bench in a park under a tree'. Find frequency of the letter 'p'

Answer: 2


Question: Sentence: 'an orange cat sitting on the ground next to a  purse'. Find frequency of the letter 's'

Answer: 2


Question: Sentence: 'a wood bench sitting in a park with three people sitting on it'. Find frequency of the letter 'h'

Answer:
3