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 closeup view of a bathroom sink, that is very modern'. Find frequency of the letter 'e'

Answer: 4


Question: Sentence: 'small airplane in the process of taking off'. Find frequency of the letter 'e'

Answer: 3


Question: Sentence: 'the young man snowboards his way to school'. Find frequency of the letter 'o'

Answer:
6