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

[EX Q]: Sentence: 'a bed with a dog laying on it next to two laptop computers'. Find frequency of the letter 'n'
[EX A]: 3

[EX Q]: Sentence: 'a bunch of cows that are in the field'. Find frequency of the letter 'a'
[EX A]: 3

[EX Q]: Sentence: 'a lunch truck with people eating next to it'. Find frequency of the letter 'e'
[EX A]:
4