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

Q: Sentence: 'a group of three dogs laying on a kitchen floor'. Find frequency of the letter 'r'

A: 3
****
Q: Sentence: 'the small black and white dog holds onto a frisbee'. Find frequency of the letter 'h'

A: 3
****
Q: Sentence: 'two police motorcycles turning around a corner followed by a car'. Find frequency of the letter 'a'

A:
4
****