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 black animal in dirt area below trees and rocks'. Find frequency of the letter 'n'

Answer: 3


Question: Sentence: 'a bedroom with a neatly made bed and a laptop'. Find frequency of the letter 'l'

Answer: 2


Question: Sentence: 'a doll holds a cup of coffee and brushes her teeth'. Find frequency of the letter 'b'

Answer:
1