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

Q: Sentence: 'a batter, catcher and umpire waiting for the pitch and a major league baseball game'. Find frequency of the letter 'c'

A: 3
****
Q: Sentence: 'a bird in a tree looking up at branches'. Find frequency of the letter 'e'

A: 3
****
Q: Sentence: 'a giraffe laying down with his head on the rocks'. Find frequency of the letter 's'

A:
2
****