TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a tall building with antenna stands before a jet flying in the background'. Find frequency of the letter 't'

SOLUTION: 6

PROBLEM: Sentence: 'a dog is shown sitting on rocks by the beach'. Find frequency of the letter 'a'

SOLUTION: 2

PROBLEM: Sentence: 'a crowd of people that are bloodied and hurt'. Find frequency of the letter 'h'

SOLUTION:
2