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 plastic plastic plate topped with three different type of food'. Find frequency of the letter 'l'

Answer: 3


Question: Sentence: 'a bunch of cows that are in the field'. Find frequency of the letter 'a'

Answer: 3


Question: Sentence: 'a cat sits on a chair holding a baseball bat with text'. Find frequency of the letter 'e'

Answer:
2