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

Q: Sentence: 'a truck with a camper sits parked in some vegetation'. Find frequency of the letter 's'

A: 3
****
Q: Sentence: 'a small boy in a high chair eating a cupcake'. Find frequency of the letter 'i'

A: 4
****
Q: Sentence: 'a apple hanging from a tree branch with some snow'. Find frequency of the letter 'a'

A:
5
****