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 boy catching a frisbee while standing ins bunch of leaves'. Find frequency of the letter 'a'

Answer: 5


Question: Sentence: 'different sets of luggage in a baggage claim area'. Find frequency of the letter 'r'

Answer: 2


Question: Sentence: 'a man cross country skiing through a forest'. Find frequency of the letter 'h'

Answer:
2