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 person is holding a chocolate doughnut with rainbow sprinkles'. Find frequency of the letter 's'

Answer: 4


Question: Sentence: 'wooden and black bench on the side of the road'. Find frequency of the letter 'a'

Answer: 3


Question: Sentence: 'a man jumping in the air with a tennis racket in his hand'. Find frequency of the letter 'a'

Answer:
6