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

Q: Sentence: 'a man holding a frisbee high into the air'. Find frequency of the letter 'a'

A: 4
****
Q: Sentence: 'a young boy standing in front of a counter with dougnuts'. Find frequency of the letter 'o'

A: 6
****
Q: Sentence: 'a yellow and green train on a train track in a wooded area'. Find frequency of the letter 'o'

A:
4
****