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 in a black wet suit rides an orange surfboard on the water'. Find frequency of the letter 'o'

Answer: 3


Question: Sentence: 'a airplane view of a big factory some people and cars'. Find frequency of the letter 'f'

Answer: 2


Question: Sentence: 'a man cutting his tongue with a pair of scissors'. Find frequency of the letter 'i'

Answer:
5