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: 'the small black and white dog holds onto a frisbee'. Find frequency of the letter 'h'

Answer: 3

Question: Sentence: 'the interior of a living and dining room'. Find frequency of the letter 'i'

Answer: 6

Question: Sentence: 'a sandwiche and brocolli is sitting on a yellow plate'. Find frequency of the letter 'c'

Answer:
2