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

[EX Q]: Sentence: 'an orange cat sitting on the ground next to a  purse'. Find frequency of the letter 's'
[EX A]: 2

[EX Q]: Sentence: 'surfboard being displayed in stor window with clothes behind it'. Find frequency of the letter 't'
[EX A]: 4

[EX Q]: Sentence: 'a man and two children fly a kite at the beach'. Find frequency of the letter 'e'
[EX A]:
4