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

[Q]: Sentence: 'a small boat travels on the water next to the shore'. Find frequency of the letter 'a'
[A]: 5


[Q]: Sentence: 'slices of orange are arranged on a plate'. Find frequency of the letter 's'
[A]: 2


[Q]: Sentence: 'a person is skiing on a lake while holding a rope attached to a parachute'. Find frequency of the letter 's'
[A]:
3