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 glass a rope and a pair of scissors'. Find frequency of the letter 's'

Answer: 6


Question: Sentence: 'a double-decker bus covered in children's illustrations driving next to a van'. Find frequency of the letter 'a'

Answer: 4


Question: Sentence: 'a man standing in a batting cage on top of astro turf'. Find frequency of the letter 'g'

Answer:
3