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 large group of motorcycles parked along a street'. Find frequency of the letter 'a'

Answer: 5


Question: Sentence: 'red chair next to side table with lamp in residential home'. Find frequency of the letter 'm'

Answer: 2


Question: Sentence: 'three men having a good time socializing with one another'. Find frequency of the letter 'e'

Answer:
6