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: 'soccer players on opposite teams fight for control over a ball'. Find frequency of the letter 't'

Answer: 4


Question: Sentence: 'two people in a snowy place near a wooden fence'. Find frequency of the letter 'n'

Answer: 5


Question: Sentence: 'baseball bats converted to colorful pieces of art'. Find frequency of the letter 'r'

Answer:
3