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

Q: Sentence: 'two persons standing outside a moving sub train'. Find frequency of the letter 'a'

A: 3
****
Q: Sentence: 'a half eaten doughnut in a persons hand'. Find frequency of the letter 'h'

A: 3
****
Q: Sentence: 'adults on beach at ocean flying large sail kites'. Find frequency of the letter 'k'

A:
1
****