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: 'three men are in a kitchen cooking and cutting through a dish'. Find frequency of the letter 'a'

Answer: 4


Question: Sentence: 'a man riding his skateboard down low as he turns'. Find frequency of the letter 'g'

Answer: 1


Question: Sentence: 'there is one slice of pizza on the tray and a woman sitting behind a sign'. Find frequency of the letter 'd'

Answer:
2