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 woman throwing a frisbee on a field'. Find frequency of the letter 's'

Answer: 1


Question: Sentence: 'a herd of giraffe walking across a field'. Find frequency of the letter 'k'

Answer: 1


Question: Sentence: 'an entree of fodd with a fork and knife next to it on a table'. Find frequency of the letter 'n'

Answer:
6