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 white and blue plate topped with meat and a salad'. Find frequency of the letter 'u'

Answer: 1

Question: Sentence: 'people plating cake in an office meeting room'. Find frequency of the letter 'g'

Answer: 2

Question: Sentence: 'a grilled sandwich on a white plate with some french fries'. Find frequency of the letter 'a'

Answer:
4