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 bathroom that has it's lights turned on'. Find frequency of the letter 'h'

Answer: 4


Question: Sentence: 'decorated baseball cake in a clear plastic box'. Find frequency of the letter 'k'

Answer: 1


Question: Sentence: 'a bike with a basket on the back wheel'. Find frequency of the letter 'a'

Answer:
4