TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'an elephant has taken a man's hat in its trunk'. Find frequency of the letter 'p'

SOLUTION: 1

PROBLEM: Sentence: 'guy leans on truck's hood while taking pics next to parked motorcycles'. Find frequency of the letter 's'

SOLUTION: 4

PROBLEM: Sentence: 'a stop sign behind a wall and palm tree'. Find frequency of the letter 'm'

SOLUTION:
1