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 gourmet looking hamburger with fries on a dining table with some wine'. Find frequency of the letter 't'

Answer: 4

Question: Sentence: 'a snowboarder making a jump of a snowy ledge'. Find frequency of the letter 'o'

Answer: 4

Question: Sentence: 'three giraffes are shown in a zoo confinement'. Find frequency of the letter 'n'

Answer:
5