TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'an image of a street sign with a corner restaurant'. Find frequency of the letter 'u'

SOLUTION: 1

PROBLEM: Sentence: 'a teenager witting on a futon couch holding gaming controls in both hands'. Find frequency of the letter 'c'

SOLUTION: 3

PROBLEM: Sentence: 'a man posing on his skis in the snow'. Find frequency of the letter 'n'

SOLUTION:
5