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

Q: Sentence: 'a man flying through the air on top of a skateboard'. Find frequency of the letter 'h'

A: 3
****
Q: Sentence: 'people waiting on a train platform in a wooded area'. Find frequency of the letter 'p'

A: 3
****
Q: Sentence: 'a man looking at himself in the mirror with a bear head'. Find frequency of the letter 't'

A:
3
****