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: 'small black bird with red on its head standing on a tree branch'. Find frequency of the letter 'b'

Answer: 3


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

Answer: 4


Question: Sentence: 'several varied pastries on display with icing and toppings'. Find frequency of the letter 'l'

Answer:
2