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: 'hand holding a white calculator inside a store'. Find frequency of the letter 'o'

Answer: 3


Question: Sentence: 'young boy flying kite in large field at outdoor event'. Find frequency of the letter 'y'

Answer: 3


Question: Sentence: 'a person standing in a reflection by a television'. Find frequency of the letter 'e'

Answer:
5