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

[Q]: Sentence: 'man in a radio studio wearing a suit in front of a microphone'. Find frequency of the letter 't'
[A]: 3


[Q]: Sentence: 'a person is water skiing and there are birds flying around above them'. Find frequency of the letter 'n'
[A]: 5


[Q]: Sentence: 'a kitchen with a stuffed animal standing above a pizza'. Find frequency of the letter 'n'
[A]:
4