TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'two baseball players high five each other during a game'. Find frequency of the letter 'y'

SOLUTION: 1

PROBLEM: Sentence: 'a small dog sits in the rear window of a car'. Find frequency of the letter 'm'

SOLUTION: 1

PROBLEM: Sentence: 'a blind folded man having a donut lowered down in his mouth'. Find frequency of the letter 'a'

SOLUTION:
4