TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a jet flying through the clear blue sky'. Find frequency of the letter 'g'

SOLUTION: 2

PROBLEM: Sentence: 'tow birds flying by a long necked crane'. Find frequency of the letter 'f'

SOLUTION: 1

PROBLEM: Sentence: 'large grassy pasture filled with trees and a single horse'. Find frequency of the letter 'l'

SOLUTION:
4