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

Q: Sentence: 'a woman in a messy kitchen with a child'. Find frequency of the letter 'a'

A: 4
****
Q: Sentence: 'a photo of a small boat on a shore'. Find frequency of the letter 'f'

A: 1
****
Q: Sentence: 'a white toilet sitting next to a white sink'. Find frequency of the letter 'i'

A:
6
****