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: 'two zebras standing around while a third zebra drinks from a pond'. Find frequency of the letter 's'

Answer: 3


Question: Sentence: 'a tower with some bright lights and clocks on it'. Find frequency of the letter 'h'

Answer: 3


Question: Sentence: 'young boy flying kite in large field at outdoor event'. Find frequency of the letter 'y'

Answer:
3