TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a giraffe shares a habitat with a zebra, an ostrich, and an okapi'. Find frequency of the letter 'e'

SOLUTION: 3

PROBLEM: Sentence: 'a small white plane sitting on top of the ocean'. Find frequency of the letter 'e'

SOLUTION: 4

PROBLEM: Sentence: 'the two giraffes walk in the heavily weeded area'. Find frequency of the letter 'f'

SOLUTION:
2

