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

Answer: 1


Question: Sentence: 'there is no image here to provide a caption for'. Find frequency of the letter 'o'

Answer: 5


Question: Sentence: 'a group of people walking down a snow covered road'. Find frequency of the letter 'r'

Answer:
3