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

Q: Sentence: 'a half eaten doughnut in a persons hand'. Find frequency of the letter 'h'

A: 3
****
Q: Sentence: 'this is a close up view of a tennis player during the game'. Find frequency of the letter 't'

A: 3
****
Q: Sentence: 'people bicycling near the beach on a bicycle lane'. Find frequency of the letter 'n'

A:
4
****