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

[EX Q]: Sentence: 'a giraffe sticking it's tongue out near a window'. Find frequency of the letter 'a'
[EX A]: 4

[EX Q]: Sentence: 'a man in a sweatshirt is taking his own picture'. Find frequency of the letter 'u'
[EX A]: 1

[EX Q]: Sentence: 'a herd of giraffe walking across a field'. Find frequency of the letter 'k'
[EX A]:
1