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: 'there are two men sitting on a couch playing video games'. Find frequency of the letter 'v'

Answer: 1


Question: Sentence: 'a double decker bus with a lot of people on board'. Find frequency of the letter 'l'

Answer: 3


Question: Sentence: 'a group of people sitting around each other in a room'. Find frequency of the letter 't'

Answer:
3