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 family sitting at a table in a restaurant looking at their phones'. Find frequency of the letter 't'

Answer: 8


Question: Sentence: 'a small doughnut held in a persons hand'. Find frequency of the letter 'n'

Answer: 4


Question: Sentence: 'a yellow bus traveling on a not-so-busy road'. Find frequency of the letter 'b'

Answer:
2