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 closet with a fan, luggage and various boxes'. Find frequency of the letter 'a'

Answer: 6


Question: Sentence: 'the snowboarder wearing a dark helmet sprays snow into the air'. Find frequency of the letter 'w'

Answer: 3


Question: Sentence: 'a teddy bear that is next to a red heart'. Find frequency of the letter 'h'

Answer:
2