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: 'salad and vegetables with me on top of plate'. Find frequency of the letter 'o'

Answer: 3


Question: Sentence: 'a notebook and pen are left on a park bench'. Find frequency of the letter 'e'

Answer: 5


Question: Sentence: 'a tabby cat perched in the open window of old, rusty car'. Find frequency of the letter 'c'

Answer:
3