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 plastic plastic plate topped with three different type of food'. Find frequency of the letter 'l'

Answer: 3


Question: Sentence: 'a woman at a table checking her cell phone'. Find frequency of the letter 'a'

Answer: 5


Question: Sentence: 'a wedding cake and a knife on a serving table'. Find frequency of the letter 'd'

Answer:
3