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 skateboarder has on red and black sneakers and is riding a skateboard'. Find frequency of the letter 'g'

Answer: 1

Question: Sentence: 'a bunch of broken down trains sit in a yard'. Find frequency of the letter 'n'

Answer: 5

Question: Sentence: 'group of adults in kitchen area of home with wood flooring'. Find frequency of the letter 'e'

Answer:
3