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

Sentence: 'four women around a man sitting in front of a cake'. Find frequency of the letter 'o'
5

Sentence: 'a person with some scissors over a bowl'. Find frequency of the letter 's'
6

Sentence: 'a kitchen is adorned in granite and wood'. Find frequency of the letter 'a'

4