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: 'a small boat travels on the water next to the shore'. Find frequency of the letter 'a'

Answer: 5

Question: Sentence: 'a group of three cats laying on top of a flowery couch'. Find frequency of the letter 't'

Answer:
3