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: 'some cubbies with towels in a blue bathroom'. Find frequency of the letter 'l'

Answer: 2


Question: Sentence: 'a snowboarder making a jump of a snowy ledge'. Find frequency of the letter 'o'

Answer: 4


Question: Sentence: 'empty restaurant dinning room set for dinner guests'. Find frequency of the letter 't'

Answer:
5