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: 'there is a stop sign that has a reflection in a puddle'. Find frequency of the letter 'e'

Answer: 5


Question: Sentence: 'a boy swinging a bat while playing baseball'. Find frequency of the letter 'h'

Answer: 1


Question: Sentence: 'a flower or tree branch in a vase growing roots'. Find frequency of the letter 'a'

Answer:
4