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 toilet sits in a cluttered bathroom next to a sink'. Find frequency of the letter 'a'

Answer: 4

Question: Sentence: 'people seated on a table looking very happy'. Find frequency of the letter 'g'

Answer: 1

Question: Sentence: 'when the pasture is covered with snow, these sheep eat hay'. Find frequency of the letter 'v'

Answer:
1