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 burning wood stove has a tea pot sitting on top of it and is full of wood'. Find frequency of the letter 'a'

Answer: 5


Question: Sentence: 'an airplane is being towed away from the jet bridge'. Find frequency of the letter 's'

Answer: 1


Question: Sentence: 'there is a structure over the street that is red and gold'. Find frequency of the letter 'e'

Answer:
8