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

Q: Sentence: 'a photo of a toilet which is not clean'. Find frequency of the letter 'w'

A: 1
****
Q: Sentence: 'a man on stiltz is standing under a pink umbrella'. Find frequency of the letter 's'

A: 3
****
Q: Sentence: 'a kitchen has a green floor and a wooden table'. Find frequency of the letter 't'

A:
2
****