TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a plane with smoke coming from the tips of both wings'. Find frequency of the letter 'c'

SOLUTION: 1

PROBLEM: Sentence: 'a red building with a crowd of people outside it near the water'. Find frequency of the letter 'e'

SOLUTION: 7

PROBLEM: Sentence: 'a man in shorts with laptop and dogs on couch'. Find frequency of the letter 'n'

SOLUTION:
4