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 sheep in a field in front of other sheep'. Find frequency of the letter 'f'

Answer: 3


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

Answer: 1


Question: Sentence: 'this is a photo of someones sink in their bathroom'. Find frequency of the letter 'e'

Answer:
3