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 cat sleeping near lots of pairs of shoes'. Find frequency of the letter 'r'

Answer: 2


Question: Sentence: 'two pepperoni pizzas and a cup on a counter'. Find frequency of the letter 'u'

Answer: 2


Question: Sentence: 'the under side of a white airplane flying in the sky'. Find frequency of the letter 'y'

Answer:
2