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 on a skateboard going down a ramp while people are watching'. Find frequency of the letter 'w'

Answer: 3

Question: Sentence: 'the miniature, elaborate exhibit depicts an ancient boating scene'. Find frequency of the letter 'n'

Answer: 6

Question: Sentence: 'an iron sculpture of a grizzly bear seated on a bench'. Find frequency of the letter 'b'

Answer:
2