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

[EX Q]: Sentence: 'different sets of luggage in a baggage claim area'. Find frequency of the letter 'r'
[EX A]: 2

[EX Q]: Sentence: 'a plate of food, with broccoli and nuts'. Find frequency of the letter 'b'
[EX A]: 1

[EX Q]: Sentence: 'a person riding a surfboard in the middle of a wave'. Find frequency of the letter 'o'
[EX A]:
3