TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a small white dog looking out a car window'. Find frequency of the letter 'l'

SOLUTION: 3

PROBLEM: Sentence: 'a baby elephant walks beside an adult elephant along a post and cable'. Find frequency of the letter 'l'

SOLUTION: 6

PROBLEM: Sentence: 'a baby sheep feeding on a adult sheep in a field'. Find frequency of the letter 'a'

SOLUTION:
5

