TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a woman sitting in front of a giant slice of cheese pizza'. Find frequency of the letter 'e'

SOLUTION: 4

PROBLEM: Sentence: 'an empty clean kitchen with island, marble countertops , stove and cabinetry'. Find frequency of the letter 'l'

SOLUTION: 3

PROBLEM: Sentence: 'a man and a woman in front of a small oven with the woman setting the dials and the man crouching down'. Find frequency of the letter 'a'

SOLUTION:
11