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 man in a suit makes the first slice into a cake'. Find frequency of the letter 't'

Answer: 4


Question: Sentence: 'a group of people stand inside of a big room'. Find frequency of the letter 'o'

Answer: 6


Question: Sentence: 'there is a zebra that is walking enar a car'. Find frequency of the letter 'r'

Answer:
4