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 person is performing a stunt on a snowboard'. Find frequency of the letter 'p'

Answer: 2


Question: Sentence: 'two people holding their skies in a snowy resort'. Find frequency of the letter 'n'

Answer: 3


Question: Sentence: 'four people are eating pizza at the table'. Find frequency of the letter 'z'

Answer:
2