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 large grass pasture land with sheep grazing on grass'. Find frequency of the letter 'a'

Answer: 7


Question: Sentence: 'party cakes in plastic containers, with a cake with a plastic santa claus and reindeer on top'. Find frequency of the letter 's'

Answer: 6


Question: Sentence: 'a woman holding up a smart phone and a little girl'. Find frequency of the letter 'e'

Answer:
2