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

Q: Sentence: 'a man sitting inside a green military truck talking to someone'. Find frequency of the letter 'i'

A: 7
****
Q: Sentence: 'a man on stiltz is standing under a pink umbrella'. Find frequency of the letter 's'

A: 3
****
Q: Sentence: 'a very tall white church with a set of three pointy towers'. Find frequency of the letter 'i'

A:
3
****