In this task, you need to count the number of times the given letter appears in the given sentence.

Q: Sentence: 'a plastic container next to a toilet on a wooden box'. Find frequency of the letter 'i'

A: 3
****
Q: Sentence: 'surfboard being displayed in stor window with clothes behind it'. Find frequency of the letter 't'

A: 4
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Q: Sentence: 'chicken, mashed potatoes and cauliflower with broccoli in sauce on a white plate'. Find frequency of the letter 's'

A:
3
****