TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a teenager witting on a futon couch holding gaming controls in both hands'. Find frequency of the letter 'c'

SOLUTION: 3

PROBLEM: Sentence: 'a girl playing with a frisbee while people watch'. Find frequency of the letter 'e'

SOLUTION: 5

PROBLEM: Sentence: 'a plate of bread with cream cheese is seen in this picture'. Find frequency of the letter 'l'

SOLUTION:
1