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 flying through the air on a bicycle'. Find frequency of the letter 'u'

Answer: 1


Question: Sentence: 'an image of a cautionary construction sign'. Find frequency of the letter 'a'

Answer: 5


Question: Sentence: 'drinks fridge and glassware in a small cafe'. Find frequency of the letter 'a'

Answer:
6


