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: 'the receipts from a meal at a restaurant are for  a sandwich, chili, and apple'. Find frequency of the letter 'u'

Answer: 1


Question: Sentence: 'there is a sandwich with a lot of meat cut in half'. Find frequency of the letter 'a'

Answer: 5


Question: Sentence: 'a tall giraffe standing by some large rocks'. Find frequency of the letter 't'

Answer:
2