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 man riding a white surfboard on a large wave'. Find frequency of the letter 'a'

Answer: 7

Question: Sentence: 'eight donuts are cooked together in oil in a metal tray'. Find frequency of the letter 'h'

Answer: 2

Question: Sentence: 'a close up of a plate of food on a table'. Find frequency of the letter 'p'

Answer:
2