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

Q: Sentence: 'a dog is shown sitting on rocks by the beach'. Find frequency of the letter 'a'

A: 2
****
Q: Sentence: 'a man on a skateboard going down a ramp while people are watching'. Find frequency of the letter 'w'

A: 3
****
Q: Sentence: 'a lady is working in an office with a window view of a construction mess in the next office'. Find frequency of the letter 't'

A:
5
****