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

[Q]: Sentence: 'baseball player reaching back as he's about to throw the ball'. Find frequency of the letter 'e'
[A]: 5


[Q]: Sentence: 'man is snow gear and skis skiing in the snow'. Find frequency of the letter 'i'
[A]: 5


[Q]: Sentence: 'a man in plaid shirt on carriage with two horses'. Find frequency of the letter 'e'
[A]:
2