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: 'man is snow gear and skis skiing in the snow'. Find frequency of the letter 'i'

Answer: 5


Question: Sentence: 'young boy flying kite in large field at outdoor event'. Find frequency of the letter 'y'

Answer: 3


Question: Sentence: 'a cell phone on top of a laptop'. Find frequency of the letter 'l'

Answer:
3