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

Q: Sentence: 'a sailboat is floating near the rocky shore of a beach'. Find frequency of the letter 'o'

A: 5
****
Q: Sentence: 'a few men walking through a market place'. Find frequency of the letter 'f'

A: 1
****
Q: Sentence: 'a black and white cat sitting on top of a bathroom sink'. Find frequency of the letter 'n'

A:
4
****