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 table topped with a cupcake on a picture of a cupcake'. Find frequency of the letter 'o'

Answer: 3


Question: Sentence: 'a room with a big screen television and a couch'. Find frequency of the letter 'h'

Answer: 2


Question: Sentence: 'several generations of a family engaged in an entertainment activity'. Find frequency of the letter 'e'

Answer:
9