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 crowd of people standing in front of a green train'. Find frequency of the letter 'g'

Answer: 2


Question: Sentence: 'men are riding on motorcycles with a man riding in their carriers'. Find frequency of the letter 'r'

Answer: 8


Question: Sentence: 'the little girl is eating lunch and having milk'. Find frequency of the letter 'g'

Answer:
3