TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'old double decker bus parked in a lot'. Find frequency of the letter 't'

SOLUTION: 1

PROBLEM: Sentence: 'a person holding a wine glass in one hand and bread sticks in the other'. Find frequency of the letter 'd'

SOLUTION: 4

PROBLEM: Sentence: 'a person holding an umbrella on a walkway'. Find frequency of the letter 'n'

SOLUTION:
4