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: 'two people wearing snowboards sitting on a snowy slope'. Find frequency of the letter 's'

Answer: 5


Question: Sentence: 'a man riding a skateboard up the side of a ramp'. Find frequency of the letter 'u'

Answer: 1


Question: Sentence: 'two zebras stand close to each other in a field'. Find frequency of the letter 'e'

Answer:
5