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 white toilet sitting next to a bathroom sink'. Find frequency of the letter 'b'

Answer: 1


Question: Sentence: 'a young man riding a skateboard near a forest'. Find frequency of the letter 'd'

Answer: 2


Question: Sentence: 'a woman with a phone in her hand laughing'. Find frequency of the letter 'i'

Answer:
3