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 is a baseball game on and a few people are watching'. Find frequency of the letter 'i'

Answer: 2


Question: Sentence: 'a bus with two floors belonging to london country'. Find frequency of the letter 't'

Answer: 4


Question: Sentence: 'bear like caricature on wire with tall building with clocks and spire in background'. Find frequency of the letter 'r'

Answer:
6