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: 'bathroom scene with a black cat going behind the door'. Find frequency of the letter 'e'

Answer: 4


Question: Sentence: 'a man using a video game controller in a room'. Find frequency of the letter 'n'

Answer: 4


Question: Sentence: 'two women sitting at a table while on their laptops'. Find frequency of the letter 'm'

Answer:
1