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 young boy holding a piece of paper on top of a table'. Find frequency of the letter 'y'

Answer: 2


Question: Sentence: 'a group of tennis players on a tennis court'. Find frequency of the letter 'o'

Answer: 4


Question: Sentence: 'a view of snowy mountains and three people standing in the snow near a slope'. Find frequency of the letter 'e'

Answer:
8