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: 'bathroom scene with a black cat going behind the door'. Find frequency of the letter 'e'

Answer: 4


Question: Sentence: 'a person holding onto a pink kite at the beach'. Find frequency of the letter 'n'

Answer: 4


Question: Sentence: 'a group of people sanding around a tv playing a game on the nintendo wii'. Find frequency of the letter 'o'

Answer:
6