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 small boy in a high chair eating a cupcake'. Find frequency of the letter 'i'

Answer: 4


Question: Sentence: 'a long row of tables displaying lots of fruit'. Find frequency of the letter 'o'

Answer: 5


Question: Sentence: 'the two men are play a table tennis computer game'. Find frequency of the letter 'e'

Answer:
7