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 full plate of food that includes rice and broccoli and carrots'. Find frequency of the letter 's'

Answer: 2

Question: Sentence: 'a bus is stopped in front of a graphic statue'. Find frequency of the letter 'e'

Answer: 2

Question: Sentence: 'a shelf with many pairs of shoes and a skateboard leaning against the wall'. Find frequency of the letter 'n'

Answer:
5