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

Q: Sentence: 'a group of tennis players on a tennis court'. Find frequency of the letter 'o'

A: 4
****
Q: Sentence: 'a small wrinkley dog wearing a bow tie'. Find frequency of the letter 'e'

A: 3
****
Q: Sentence: 'a man in suit and tie has a cane and cigar'. Find frequency of the letter 'c'

A:
2
****