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

Q: Sentence: 'a man sitting on a motorcycle near two other men'. Find frequency of the letter 'r'

A: 3
****
Q: Sentence: 'a man serving himself pizza in a wooden booth'. Find frequency of the letter 'n'

A: 4
****
Q: Sentence: 'a catcher playing baseball in the snow beside a snowman'. Find frequency of the letter 'a'

A:
7
****