TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
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 couple of buildings that has a bus out front'. Find frequency of the letter 'a'

SOLUTION: 4

PROBLEM: Sentence: 'a snowy path where a man is walking down with a snow blower'. Find frequency of the letter 'o'

SOLUTION:
4