TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a very big nice looking living room with nice furnishings'. Find frequency of the letter 'e'

SOLUTION: 3

PROBLEM: Sentence: 'a bird is perched on a container in a person's hand'. Find frequency of the letter 'c'

SOLUTION: 2

PROBLEM: Sentence: 'a man who is playing a video game'. Find frequency of the letter 's'

SOLUTION:
1