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 pushing a cart full of bananas'. Find frequency of the letter 'u'

SOLUTION: 2

PROBLEM: Sentence: 'a man flying through the air on a bicycle'. Find frequency of the letter 'u'

SOLUTION: 1

PROBLEM: Sentence: 'the image is of a black bear looking forward'. Find frequency of the letter 'a'

SOLUTION:
5