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: 'two computers and a laptop set up on a desk'. Find frequency of the letter 'r'

Answer: 1

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

Answer: 1

Question: Sentence: 'an old polaroid picture of a girl lying on a bed reading a newspaper'. Find frequency of the letter 'i'

Answer:
5