TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a man sitting on a motorcycle near two other men'. Find frequency of the letter 'r'

SOLUTION: 3

PROBLEM: Sentence: 'man in a radio studio wearing a suit in front of a microphone'. Find frequency of the letter 't'

SOLUTION: 3

PROBLEM: Sentence: 'a woman sitting on a brown leather couch in front of a tv'. Find frequency of the letter 'w'

SOLUTION:
2