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 woman is playing an interactive video game'. Find frequency of the letter 't'

Answer: 2

Question: Sentence: 'three birds are sitting on a tree in a forest'. Find frequency of the letter 'h'

Answer: 1

Question: Sentence: 'a child in a red shirt eating a hot dog'. Find frequency of the letter 'a'

Answer:
4