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

Q: Sentence: 'a person is performing a stunt on a snowboard'. Find frequency of the letter 'p'

A: 2
****
Q: Sentence: 'a person with some scissors over a bowl'. Find frequency of the letter 's'

A: 6
****
Q: Sentence: 'a woman in black riding a white and brown horse'. Find frequency of the letter 'n'

A:
5
****