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 white and blue plate topped with meat and a salad'. Find frequency of the letter 'u'

SOLUTION: 1

PROBLEM: Sentence: 'young children playing in the snow near a tunnel'. Find frequency of the letter 's'

SOLUTION:
1